oico-dd hf export v1.0.0 (schema_version 1.0.0, commit 3f998b4)

README.md

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+---
+pretty_name: Ontario Lobbying & MPP Disclosure Graph (oico-dd structured projection)
+language:
+  - en
+  - fr
+tags:
+  - government
+  - lobbying
+  - transparency
+  - accountability
+  - canada
+  - ontario
+  - public-records
+  - entity-resolution
+size_categories:
+  - 100K<n<1M
+configs:
+  - config_name: persons
+    data_files: data/persons.parquet
+  - config_name: organizations
+    data_files: data/organizations.parquet
+  - config_name: name_aliases
+    data_files: data/name_aliases.parquet
+  - config_name: registrations
+    data_files: data/registrations.parquet
+  - config_name: registration_filers
+    data_files: data/registration_filers.parquet
+  - config_name: registration_versions
+    data_files: data/registration_versions.parquet
+  - config_name: registration_clients
+    data_files: data/registration_clients.parquet
+  - config_name: registration_lobbyists
+    data_files: data/registration_lobbyists.parquet
+  - config_name: registration_subjects
+    data_files: data/registration_subjects.parquet
+  - config_name: registration_targets
+    data_files: data/registration_targets.parquet
+  - config_name: government_bodies
+    data_files: data/government_bodies.parquet
+  - config_name: former_offices
+    data_files: data/former_offices.parquet
+  - config_name: minister_portfolio_bridge
+    data_files: data/minister_portfolio_bridge.parquet
+  - config_name: minister_portfolios
+    data_files: data/minister_portfolios.parquet
+  - config_name: ridings
+    data_files: data/ridings.parquet
+  - config_name: riding_aliases
+    data_files: data/riding_aliases.parquet
+  - config_name: held_by
+    data_files: data/held_by.parquet
+  - config_name: disclosures
+    data_files: data/disclosures.parquet
+  - config_name: government_funding
+    data_files: data/government_funding.parquet
+  - config_name: government_funding_detail
+    data_files: data/government_funding_detail.parquet
+  - config_name: related_parties
+    data_files: data/related_parties.parquet
+  - config_name: registration_agents
+    data_files: data/registration_agents.parquet
+  - config_name: communication_techniques
+    data_files: data/communication_techniques.parquet
+  - config_name: corroborations
+    data_files: data/corroborations.parquet
+---
+
+# Ontario Lobbying & MPP Disclosure Graph
+
+A structured, entity-resolved projection of three **public** Ontario government
+records sources, exported as flat, documented parquet tables:
+
+1. **Ontario Lobbyist Registry** (Office of the Integrity Commissioner of
+   Ontario, lobbyist.oico.on.ca) — lobbyist registrations: who is registered to
+   lobby, for which client, about what, aimed at which offices.
+2. **MPP Public Disclosure Statements** (Office of the Integrity Commissioner
+   of Ontario, PDS) — annual financial-interest disclosure statements filed by
+   Members of Provincial Parliament under the *Members' Integrity Act, 1994*.
+3. **Legislative Assembly of Ontario (OLA) roster and member pages**
+   (ola.org) — which person held which electoral district (riding) in which
+   parliament, with term dates; plus ministerial portfolio histories for a
+   small, named set of ex-ministers (see [§ The one assertion beyond
+   source](#the-one-assertion-beyond-the-sources-minister-portfolios)).
+
+The dataset's purpose is **research, journalism, and public accountability**:
+it lets the question "what registered lobbying intent pointed at the office an
+MPP held, during the term they held it, and what did that MPP disclose?" be
+answered with explicit, per-row confidence labels.
+
+> **Read this before using the data:** every record here describes **lawful,
+> public filings**. Registration to lobby is a legal, regulated activity.
+> Nothing in this dataset is evidence of wrongdoing, contact, outcome, or
+> influence, and it must not be presented as such. See
+> [Limitations](#limitations).
+
+## The discipline lives in the data
+
+This dataset was built so that its epistemic limits are expressible **from
+columns, not just prose**:
+
+- Every resolved or derived reference (`person_id`, `org_id`, `riding_id`,
+  `govbody_id`) travels with a `confidence_tier` / `resolution_tier` and a
+  `match_method` **on the same row**.
+- A `NULL` reference means *not resolved* — the verbatim source string is still
+  on the row. Under-resolution is exported honestly; no column is filled by
+  guesswork.
+- Every table carries a `source` column naming its upstream dataset, so a
+  single parquet file separated from this card still states where its rows
+  came from.
+- Identity is never a name. Raw name strings live in `name_aliases`
+  observations; persons and organizations are resolution-layer entities with
+  an audit trail (`canonical_name_source`, `match_method`, `reviewed`,
+  `corroborations`).
+
+### Confidence tiers
+
+| tier | meaning | safe use |
+|---|---|---|
+| `confirmed` | exact-string identity match across sources, OR human-merged **with** a second corroborating signal (see `corroborations`) | may be used in analysis without further qualifier |
+| `probable` | human-reviewed or normalized-equal name match, **no** second signal | qualify ("apparently the same person/organization") |
+| `possible` | fuzzy candidate, **not** human-reviewed | research-only; never in an external claim |
+| `ambiguous` | (held_by only) a by-election parliament with multiple holders whose hand-over date is not resolved; **all** holders are emitted, each marked ambiguous | filter out for any per-person claim, or handle the overlap explicitly |
+| `role_only` | (former_offices only) the declaration names a *class* of body ("a minister's office"), not a specific one; joinable at role level only | never attach to a specific ministry |
+
+**Under-merging is by design.** Two records that *might* be the same actor are
+kept separate unless the merge survives review. An under-merged graph
+understates connectivity; an over-merged one fabricates connections. When the
+source data could not support a link, the link is absent — that absence is
+information, not an error.
+
+## Provenance
+
+All sources are public. Point-in-time capture; see `manifest.json`
+(`capture_windows`, `git_commit`, `source_db.sha256`, per-table row counts and
+SHA-256) for the exact snapshot identity of this export.
+
+| source | capture |
+|---|---|
+| Ontario Lobbyist Registry (lobbyist.oico.on.ca) | full active-set crawl, May–June 2026; parsed into the source database 2026-06-12 |
+| MPP Public Disclosure Statements (PDS) | fetched 2026-05-24; filings spanning 2005–2025 |
+| OLA roster (ola.org) | roster export generated 2026-05-26 (export id and source commit in `manifest.json`), imported 2026-06-11 |
+| OLA member pages (minister portfolios) | fetched 2026-06-12; per-row `source_url` and `source_sha256` |
+
+**The lobbyist capture is the registry's *current active set*.** De-registered
+historical filings are not in the registry's public search and are therefore
+absent here. Any count over past periods derived from this data (e.g.
+"registrations first filed during the 42nd Parliament") is a **lower bound**:
+only filings still active at capture time appear. The registry's grid shows a
+status column, but it was not persisted; rather than fabricate one, no
+`status` column is exported — all exported registrations were in the active
+result set at capture.
+
+This export is a derived, regenerable projection of a SQLite mirror, which is
+itself parsed from an archived raw-HTML capture. No fact is authored in this
+export that is not in the source database; `registrations.raw_html_path` and
+`registration_versions.raw_html_path` point into the (unpublished) raw
+archive for full traceability.
+
+**Deliberately not republished** (although present in the public source):
+registrant email, phone, fax, street address, and postal code — for all
+parties (registrants, clients, agents, additional parties). City, province,
+and country are kept. The full redaction list is `manifest.json
+→ redacted_fields`.
+
+## Methodology
+
+### Entity resolution (persons, organizations)
+
+Names observed across sources (registrant names, firm names, client names,
+funder names, additional-party names, PDS MPP names) are clustered into
+entities only by: exact string identity; normalized identity
+(whitespace/diacritic/suffix normalization); or human-reviewed fuzzy matches,
+with a written review note. A merge is `confirmed` only with a second,
+non-name signal (shared address, co-registration, riding history — exported in
+`corroborations`). Unreviewed fuzzy candidates are **not merged and not
+exported as links**.
+
+### Riding resolution (the lobbyist↔MPP bridge)
+
+Lobbyist filings never name an MPP — they target the *Office of the Member
+for &lt;riding&gt;*. PDS and the OLA roster name persons + ridings. The join
+therefore runs through a canonical `ridings` table; observed string variants
+(three different dash characters across sources, mojibake-era forms, renames)
+are `riding_aliases`. Exact and dash-collapse matches are `confirmed`;
+genuine rename candidates were human-reviewed and are never auto-merged.
+
+A registration is connectable to an MPP **only** via riding + term window:
+`registration_targets.riding_id` → `held_by` (riding, parliament, term dates)
+→ `persons`. Whether to require the registration's `initial_filing_date` to
+fall inside the term is the analyst's choice — do so for any per-person claim.
+
+### The person spine (OLA roster) and the one unavoidable name-bridge
+
+`held_by` comes from the OLA roster, keyed on a stable `member_slug` — never
+on a name. The single name-match in the pipeline is the bridge between
+PDS-resolved MPP entities and roster slugs (`persons.roster_link_method` /
+`roster_link_tier`): exact name → `confirmed`, normalized-only → `probable`,
+ambiguous or missing → **not forced** (the person remains in the data with
+`roster_linked = false`; ~70 PDS-era MPPs are such retained "bridge islands").
+
+### By-election ambiguity
+
+Where a parliament had multiple holders of one riding (by-elections), `held_by`
+contains **all** holders, each with `ambiguous = true` and
+`confidence_tier = 'ambiguous'`, sharing the parliament bounds. This is the
+honest shape: the source does not date the hand-over. Per-person analysis must
+filter to `confirmed` or model the overlap.
+
+## The one assertion beyond the sources: minister portfolios
+
+The OICO former-public-office checklist is *generic*: "Minister of Cabinet"
+names no ministry. For the small set of ex-ministers who themselves filed
+consultant-lobbyist registrations, `minister_portfolios` pins the named person
+to the specific ministry/ministries they led, **sourced from their OLA member
+page** (the Legislative Assembly's own record; per-row `source_url` +
+`source_sha256`). This is the only place the dataset asserts a fact not found
+in the OICO source, and it is scope-limited and tiered:
+
+- The person↔OLA bridge (`minister_portfolio_bridge`) uses the same
+  discipline as the MPP bridge: clean unique name match or nothing. Ambiguous
+  matches and deputy ministers (appointed officials, no OLA page) are exported
+  with `bridge_status` `ambiguous` / `no_match` and **no** portfolio rows.
+- A portfolio attaches to a `government_bodies` node **only** when the derived
+  ministry name equals an existing lobbying-target ministry byte-for-byte
+  after normalization (`body_match_kind = 'exact_current_node'`). Cross-era
+  ministry renames are never forced: the best fuzzy candidate is recorded as
+  review-only (`body_candidate_id`, `body_candidate_sim`) with a NULL
+  `confidence_tier`.
+
+## Limitations
+
+**Read before making any claim from this data.**
+
+1. **A registration is registered intent, not contact.** It says "on or after
+   this date, this lobbyist may contact public office holders about these
+   topics." It is not evidence a meeting occurred, that anyone was contacted,
+   or that anything was influenced. Subject matters and techniques are
+   self-classified by the registrant.
+2. **Co-occurrence is not causation.** "Lobbying targeted riding X while MPP Y
+   held it and MPP Y disclosed an interest in Z" is three facts about public
+   filings, not a narrative. This dataset must not be used to allege
+   wrongdoing; lobbying and disclosure are the *compliance* mechanisms working
+   as designed.
+3. **Active-set lower bound.** See [Provenance](#provenance): historical
+   counts are lower bounds; de-registered filings are absent.
+4. **PDS lists interests, not amounts.** MPP disclosures are
+   interest-presence prose (with limited exceptions, no dollar values). "MPP X
+   holds an interest in Y" is supportable; "MPP X owns $N" is not.
+   Cross-year changes reflect disclosure changes, not necessarily economic
+   ones. Disclosure free text is exported verbatim (`*_text` columns);
+   structured interest→organization edges were deliberately **not** extracted
+   (an NLP pass with its own error rate — deferred).
+5. **The targets grain trap.** `registration_targets` is RAW-mention grain:
+   the same (registration, target, subject_type) repeats across lobbying
+   activities within one filing. **Always `DISTINCT` over
+   `registration_no` (and `subject_type` if relevant) before counting.**
+   `target_row_count` in `government_bodies` is raw-mention count, not
+   registration count.
+6. **HELD_BY is parliament-level.** Term dates come from the OLA roster at
+   parliament granularity; by-election parliaments are multi-holder and
+   tier-marked `ambiguous` (see Methodology).
+7. **Name-bridge tiers are load-bearing.** Any cross-source person claim must
+   filter the relevant tier columns to `confirmed` (and should state the tier
+   either way). `probable` links are name-only matches.
+8. **Self-reported sources.** The Integrity Commissioner reviews filings for
+   completeness, not truthfulness.
+9. **Known warts, kept honestly.** A small number of mojibake-era name twins
+   survive as separate entities (e.g. one registration carrying both
+   `Matthew Dubé` and `Matthew Dubé` as filer aliases resolved to two
+   entities, ≈13 registrations affected); merging them automatically would
+   violate the review discipline, so they remain split (under-merge by
+   design). A handful of riding string variants likewise remain uncollapsed.
+10. **Resolution decisions are auditable, not infallible.** Match methods,
+    review flags, and corroboration signals are exported so a third party can
+    check any call.
+
+## Intended use
+
+Research, journalism, civic transparency, and accountability analysis of
+Ontario's lobbying and disclosure regimes. Appropriate uses include aggregate
+analysis of lobbying activity, registered-interest mapping, and tooling that
+surfaces public filings with their confidence labels intact.
+
+**Out of scope / inappropriate:** presenting any row as evidence of
+misconduct; dropping tier columns and presenting `probable`/`possible` links
+as fact; using redacted-category contact information from other sources to
+re-identify or contact individuals; claims about dollar values of MPP
+interests.
+
+All individuals appear in their public, regulated capacities (registered
+lobbyists, filing MPPs, declared clients/officers of organizations) in records
+those individuals or their organizations filed under Ontario law.
+
+## Licensing & attribution
+
+Not yet determined — this build is staged privately. Source records are
+public filings published by the Office of the Integrity Commissioner of
+Ontario and the Legislative Assembly of Ontario; an explicit license and
+attribution statement will be set before any public release.
+
+## Schema
+
+Stable string ids shared across tables (same vocabulary as the project's
+graph projection): `person:slug:{member_slug}` / `person:ent:{entity_id}`,
+`org:{entity_id}`, `gov:{body_kind}:{normalized_name}`; ridings use integer
+`riding_id`; registrations use the registry's own `registration_no`.
+
+Dates are ISO `YYYY-MM-DD` strings (NULL where the source omits them);
+timestamps are ISO-8601 UTC. `*_norm` columns are deterministic
+lowercase/whitespace normalizations used as join keys upstream — they are not
+display names.
+
+### Core entities
+
+**`persons`** — one row per resolved person (lobbyists, MPPs, ex-office
+holders). Union of resolution-layer person entities and OLA spine persons who
+held a seat; merged where bridged. Historical roster-only MPPs (no seat row in
+scope, no captured filings) are intentionally out of scope (count in
+`manifest.json → notes`).
+Columns: `person_id`, `entity_id`, `member_slug`, `canonical_name`,
+`canonical_name_source`, `roster_name`, `is_mpp`, `is_lobbyist`,
+`roster_linked`, `roster_link_method`, `roster_link_tier`, `parliaments`
+(JSON array string), `confidence_tier`, `source`.
+
+**`organizations`** — one row per resolved organization (firms, clients,
+parents, beneficiaries, coalition members, funders). `org_roles` is a JSON
+array string of observed roles. Columns: `org_id`, `entity_id`,
+`canonical_name`, `canonical_name_source`, `org_roles`, `confidence_tier`,
+`source`.
+
+**`name_aliases`** — one row per verbatim name string observed in a source and
+attached to a person/org; the full audit trail of the identity layer. Columns:
+`alias_id`, `node_id`, `node_kind`, `raw_name`, `normalized_name`,
+`alias_source` (which source field the string was observed in), `source_ref`
+(e.g. the registration_no), `match_method` (`exact`|`normalized`|`fuzzy`|
+`manual`), `match_confidence`, `reviewed`, `review_note`, `confidence_tier`
+(of the parent entity), `source`.
+
+**`corroborations`** — one row per second-signal corroboration backing a
+`confirmed` merge: `corroboration_id`, `node_id`, `entity_id`, `signal_kind`
+(`shared_address`|`co_registration`|`riding_history`|`other`),
+`signal_value`, `source_ref`, `source`.
+
+### Lobbyist registry
+
+**`registrations`** — one row per registration (current state, active set).
+Grain: `registration_no` (`CL`/`OL`/`PP` prefix = consultant / in-house
+organization / in-house persons-and-partnerships). `filed_on_date` is the last
+amendment timestamp. Columns: `registration_no`, `registration_type`,
+`lobbyist_number`, `initial_filing_date`, `filed_on_date`,
+`registrant_first_name`, `registrant_middle_initial`,
+`registrant_last_name`, `firm_name`, `city`, `prov_state`, `country`,
+`fetched_at`, `raw_html_path`, `source`.
+
+**`registration_filers`** — one row per resolved (registration, filer);
+`filer_kind` `person` (the registrant individual) or `firm` (the registrant
+organization) — both file. Columns: `registration_no`, `filer_kind`,
+`node_id`, `resolution_tier`, `match_method`, `source`.
+
+**`registration_versions`** — changefeed: one row per observed
+(registration_no, last_amendment_date). Columns: `registration_no`,
+`last_amendment_date`, `registration_type`, `raw_html_path`, `observed_at`,
+`source`.
+
+**`registration_clients`** — one row per client line (CL only). The resolved
+`client_org_id` joins on the verbatim name within the same registration;
+NULL = unresolved. Columns: `client_row_id`, `registration_no`,
+`client_name`, `client_norm`, `client_business`, `city`, `prov_state`,
+`country`, `client_org_id`, `resolution_tier`, `match_method`, `source`.
+
+**`registration_lobbyists`** — one row per named lobbyist line; `role` is
+`consultant` | `in_house_current` | `in_house_former` | `pp`. These names are
+NOT entity-resolved (deliberately — see `former_offices`). Columns:
+`lobbyist_row_id`, `registration_no`, `lobbyist_name`, `lobbyist_norm`,
+`title`, `commencement_date`, `completion_date`, `role`, `source`.
+
+**`registration_subjects`** — one row per subject line; `subject_kind`
+`subject_matter` (controlled topic vocabulary) or `lobbying_activity` (typed:
+Bill, Regulation, Policy/Program, …) with free-text `goal_text`. Columns:
+`subject_row_id`, `registration_no`, `subject_kind`, `subject_type`,
+`subject_text`, `subject_norm`, `goal_text`, `source`.
+
+**`registration_targets`** — ⚠ RAW-mention grain (limitation 5): one row per
+target mention per lobbying activity. `target_kind` ∈ `mpp` (riding-office;
+resolves to `riding_id`), `ministry`, `ministers_office`, `agency` (resolve
+to `govbody_id`), `other_institution` (kept verbatim, no resolved ref).
+`resolution_tier` is set only where a riding resolution is asserted. Columns:
+`target_row_id`, `registration_no`, `target_kind`, `target_name`,
+`target_norm`, `subject_type`, `riding_id`, `riding_match_method`,
+`govbody_id`, `resolution_tier`, `source`.
+
+**`government_bodies`** — one row per distinct (body_kind, normalized name)
+government body observed as a lobbying target, plus bodies named only by
+former-office declarations (`created_for_former_office = true`, e.g. the
+dissolved Ontario Power Authority). Columns: `govbody_id`, `body_kind`,
+`name`, `normalized_name`, `target_row_count` (raw mentions, not
+registrations), `created_for_former_office`, `source`.
+
+**`government_funding`** / **`government_funding_detail`** — the registry's
+"is the client/organization government funded?" answer, and one row per
+declared funder line with verbatim and parsed amounts (`amount_value` NULL
+where unparseable). Detail columns: `funding_row_id`, `registration_no`,
+`funder_name`, `funder_norm`, `amount_raw`, `amount_value`, `funder_org_id`,
+`resolution_tier`, `match_method`, `source`.
+
+**`related_parties`** — one row per additional-party line behind a CL
+registration; `party_kind` ∈ `parent_company`, `other_beneficiary`,
+`coalition_member`, `private_funder`. Columns: `party_row_id`,
+`registration_no`, `party_kind`, `name`, `name_norm`, `city`, `prov_state`,
+`country`, `org_id`, `resolution_tier`, `match_method`, `source`.
+
+**`registration_agents`** — "retained by agent" lines (CL only):
+`agent_row_id`, `registration_no`, `agent_name`, `agent_norm`, `city`,
+`prov_state`, `country`, `source`.
+
+**`communication_techniques`** — one row per declared technique line:
+`technique_row_id`, `registration_no`, `technique_text`, `technique_norm`,
+`source`.
+
+### Revolving door
+
+**`former_offices`** — one row per former-public-office declaration line.
+`office_source = 'cl_consultant'`: the statutory checklist declared by the
+consultant who filed — entity-resolved, so `person_id` is set; `role` is a
+controlled vocabulary (the seniority class); `body_govbody_id` is set ONLY
+where the checklist names a specific body (OPG/OPA/IESO), tier `confirmed` —
+otherwise the row is tier `role_only` and must not be attached to a specific
+ministry. `office_source = 'employee'`: per-employee OL/PP grid lines —
+**not** entity-resolved, `person_id` NULL (attributing them to the firm's
+registrant would fabricate identity). Columns: `former_office_row_id`,
+`registration_no`, `person_id`, `employee_name`, `office_text`,
+`office_norm`, `office_source`, `role`, `body_govbody_id`, `body_kind`,
+`resolution_tier`, `resolution_method`, `source`.
+
+**`minister_portfolio_bridge`** — one row per distinct ex-minister /
+ex-deputy-minister person among CL registrants, recording whether they bridge
+to an OLA member slug: `bridge_id`, `person_display`, `person_norm`,
+`role_class`, `lobbyist_number`, `registration_nos` (JSON array string),
+`member_slug`, `bridge_status` (`bridged`|`ambiguous`|`no_match`),
+`bridge_method`, `confidence_tier`, `bridge_note`, `source`.
+
+**`minister_portfolios`** — one row per ministerial portfolio parsed from a
+bridged person's OLA member page (see [the one assertion beyond
+source](#the-one-assertion-beyond-the-sources-minister-portfolios)):
+`portfolio_id`, `member_slug`, `person_display`, `role_class`, `parliament`,
+`role_title_raw`, `term_start`, `term_end`, `ministry_candidate`,
+`ministry_norm`, `body_govbody_id` (set only when `body_match_kind =
+'exact_current_node'`), `body_match_kind`, `body_candidate_id`,
+`body_candidate_sim` (review-only fuzzy candidate), `confidence_tier`,
+`source_url`, `source_sha256`, `source`.
+
+### The riding bridge & temporal spine
+
+**`ridings`** — one row per canonical electoral district: `riding_id`,
+`canonical_name`, `normalized_name`, `notes`, `source`.
+
+**`riding_aliases`** — one row per observed riding string variant:
+`riding_alias_id`, `riding_id`, `raw_name`, `normalized_name`,
+`alias_source` (`mpp_disclosure`|`lobbyist_target`), `source_ref`,
+`match_method`, `reviewed`, `review_note`, `source`.
+
+**`held_by`** — one row per (riding, person, parliament) holding;
+by-election parliaments emit multiple rows marked `ambiguous` (limitation 6).
+`term_end` NULL = ongoing. Columns: `held_by_id`, `riding_id`, `riding_raw`,
+`member_slug`, `person_id`, `parliament_number`, `term_start`, `term_end`,
+`term_start_raw`, `term_end_raw`, `ambiguous`, `confidence_tier`, `source`.
+
+### MPP disclosures
+
+**`disclosures`** — one row per disclosure FILING EVENT, grain
+(mpp, year, as_of_date) — an MPP can file twice in a year (by-election +
+year-end), and both rows coexist. Interest panels are verbatim free text
+(limitation 4). Columns: `disclosure_id`, `person_id`, `mpp_id`, `mpp_name`,
+`riding_raw`, `year`, `as_of`, `as_of_date`, `income_text`, `assets_text`,
+`liabilities_text`, `gifts_text`, `offices_text`, `spouse_income_text`,
+`spouse_assets_text`, `spouse_liabilities_text`, `person_resolution_tier`,
+`fetched_at`, `source`.
+
+## Example: the anchor query
+
+"Registered lobbying intent aimed at the office MPP X held, in-term,
+confirmed-tier only" — directly from the parquet:
+
+```python
+import pandas as pd
+
+persons  = pd.read_parquet("data/persons.parquet")
+held_by  = pd.read_parquet("data/held_by.parquet")
+targets  = pd.read_parquet("data/registration_targets.parquet")
+regs     = pd.read_parquet("data/registrations.parquet")
+
+pid   = persons.loc[persons.canonical_name == "Michael Mantha", "person_id"].iloc[0]
+terms = held_by[(held_by.person_id == pid) & (held_by.confidence_tier == "confirmed")]
+
+hits = (
+    targets[targets.resolution_tier == "confirmed"]
+    .merge(terms[["riding_id", "term_start", "term_end"]], on="riding_id")
+    .merge(regs[["registration_no", "initial_filing_date"]], on="registration_no")
+)
+in_term = hits[
+    (hits.initial_filing_date >= hits.term_start)
+    & (hits.term_end.isna() | (hits.initial_filing_date <= hits.term_end))
+]
+n = in_term.registration_no.nunique()   # DISTINCT — limitation 5
+```
+
+The result is a count of *registrations declaring intent to lobby that
+office during that tenure* — a lower bound (limitation 3), not a contact log
+(limitation 1).
+
+## Reproducibility
+
+Generated by `oico-dd export hf` from the project's resolved SQLite mirror —
+deterministic: re-running over the same database reproduces byte-identical
+parquet files. `manifest.json` records the export timestamp, source-DB
+SHA-256, generating git commit, capture windows, redacted fields, and
+per-table row counts, byte sizes, SHA-256 digests, and grain statements.

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+size 62340

data/registration_agents.parquet

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manifest.json

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+{
+  "dataset": "oico-dd structured projection (Ontario lobbying & MPP disclosures)",
+  "schema_version": "1.0.0",
+  "exported_at": "2026-06-12T11:48:40+00:00",
+  "source_db": {
+    "path": "oico.db",
+    "sha256": "d1e736b510445f507ac79bbd5987bacdbf53fd4dc89f3ff1b09bd2915758d727"
+  },
+  "git_commit": "3f998b441a4e17bbe5062f4e42aaf10f7ed3e6b2",
+  "capture_windows": {
+    "lobbyist_registry_parsed_at": {
+      "min": "2026-06-12T00:25:08+00:00",
+      "max": "2026-06-12T00:26:29+00:00"
+    },
+    "lobbyist_registry_observed_at": {
+      "min": "2026-06-12T00:25:08+00:00",
+      "max": "2026-06-12T00:26:29+00:00"
+    },
+    "pds_fetched_at": {
+      "min": "2026-05-24T19:28:11+00:00",
+      "max": "2026-05-24T19:28:23+00:00"
+    },
+    "ola_roster": {
+      "export_id": "3db0cb3d-9abb-40e0-92b1-7f4c9c42ac9e",
+      "source_commit": "ea77aac",
+      "generated_at": "2026-05-26T21:02:13.689721+00:00",
+      "imported_at": "2026-06-11T21:42:35+00:00"
+    },
+    "minister_portfolio_created_at": {
+      "min": "2026-06-12T02:58:58+00:00",
+      "max": "2026-06-12T02:58:58+00:00"
+    }
+  },
+  "row_counts": {
+    "persons": 2182,
+    "organizations": 5249,
+    "name_aliases": 19289,
+    "registrations": 4153,
+    "registration_filers": 8318,
+    "registration_versions": 4156,
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+    "registration_lobbyists": 9668,
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+    "registration_targets": 318128,
+    "government_bodies": 228,
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+    "minister_portfolio_bridge": 15,
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+    "registration_agents": 72,
+    "communication_techniques": 25036,
+    "corroborations": 396
+  },
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+  "tables": {
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+      "bytes": 62340,
+      "sha256": "b016e2c2c5b4a8ddc6173e189c98e2e93373e4777ea1798095225ddb38a3897d",
+      "grain": "one row per resolved person node (entity person ∪ OLA spine person)",
+      "columns": [
+        "person_id",
+        "entity_id",
+        "member_slug",
+        "canonical_name",
+        "canonical_name_source",
+        "roster_name",
+        "is_mpp",
+        "is_lobbyist",
+        "roster_linked",
+        "roster_link_method",
+        "roster_link_tier",
+        "parliaments",
+        "confidence_tier",
+        "source"
+      ]
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+      "grain": "one row per resolved organization entity",
+      "columns": [
+        "org_id",
+        "entity_id",
+        "canonical_name",
+        "canonical_name_source",
+        "org_roles",
+        "confidence_tier",
+        "source"
+      ]
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+      "sha256": "a90ac043359fca754e0e5de53abfb9ddfe5f87d4f4243787167478eb5281d1e1",
+      "grain": "one row per observed verbatim name string attached to a person/org",
+      "columns": [
+        "alias_id",
+        "node_id",
+        "node_kind",
+        "raw_name",
+        "normalized_name",
+        "alias_source",
+        "source_ref",
+        "match_method",
+        "match_confidence",
+        "reviewed",
+        "review_note",
+        "confidence_tier",
+        "source"
+      ]
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+      "grain": "one row per lobbyist registration (current state, active set)",
+      "columns": [
+        "registration_no",
+        "registration_type",
+        "lobbyist_number",
+        "initial_filing_date",
+        "filed_on_date",
+        "registrant_first_name",
+        "registrant_middle_initial",
+        "registrant_last_name",
+        "firm_name",
+        "city",
+        "prov_state",
+        "country",
+        "fetched_at",
+        "raw_html_path",
+        "source"
+      ]
+    },
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+      "grain": "one row per resolved (registration, filer) — person and/or firm",
+      "columns": [
+        "registration_no",
+        "filer_kind",
+        "node_id",
+        "resolution_tier",
+        "match_method",
+        "source"
+      ]
+    },
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+      "grain": "one row per observed (registration, amendment date) — changefeed",
+      "columns": [
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+        "last_amendment_date",
+        "registration_type",
+        "raw_html_path",
+        "observed_at",
+        "source"
+      ]
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+      "grain": "one row per client line on a CL registration",
+      "columns": [
+        "client_row_id",
+        "registration_no",
+        "client_name",
+        "client_norm",
+        "client_business",
+        "city",
+        "prov_state",
+        "country",
+        "client_org_id",
+        "resolution_tier",
+        "match_method",
+        "source"
+      ]
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+      "grain": "one row per named lobbyist line on a registration",
+      "columns": [
+        "lobbyist_row_id",
+        "registration_no",
+        "lobbyist_name",
+        "lobbyist_norm",
+        "title",
+        "commencement_date",
+        "completion_date",
+        "role",
+        "source"
+      ]
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+      "grain": "one row per subject/lobbying-activity line on a registration",
+      "columns": [
+        "subject_row_id",
+        "registration_no",
+        "subject_kind",
+        "subject_type",
+        "subject_text",
+        "subject_norm",
+        "goal_text",
+        "source"
+      ]
+    },
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+      "grain": "one row per RAW target mention (repeats across activities — DISTINCT before counting)",
+      "columns": [
+        "target_row_id",
+        "registration_no",
+        "target_kind",
+        "target_name",
+        "target_norm",
+        "subject_type",
+        "riding_id",
+        "riding_match_method",
+        "govbody_id",
+        "resolution_tier",
+        "source"
+      ]
+    },
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+      "grain": "one row per distinct (body_kind, normalized name) government body",
+      "columns": [
+        "govbody_id",
+        "body_kind",
+        "name",
+        "normalized_name",
+        "target_row_count",
+        "created_for_former_office",
+        "source"
+      ]
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+      "grain": "one row per former-public-office declaration line (revolving door)",
+      "columns": [
+        "former_office_row_id",
+        "registration_no",
+        "person_id",
+        "employee_name",
+        "office_text",
+        "office_norm",
+        "office_source",
+        "role",
+        "body_govbody_id",
+        "body_kind",
+        "resolution_tier",
+        "resolution_method",
+        "source"
+      ]
+    },
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+      "sha256": "52e5753d960a0d3f62f6c005affaf3d25651538f88f572216b8d0946384e5daf",
+      "grain": "one row per distinct ex-minister/deputy person bridged toward OLA",
+      "columns": [
+        "bridge_id",
+        "person_display",
+        "person_norm",
+        "role_class",
+        "lobbyist_number",
+        "registration_nos",
+        "member_slug",
+        "bridge_status",
+        "bridge_method",
+        "confidence_tier",
+        "bridge_note",
+        "source"
+      ]
+    },
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+      "sha256": "9c52e86c565dc1feabaf1ff649686f5a05f45ea318e08be5084f53b09db02167",
+      "grain": "one row per ministerial portfolio parsed from a bridged person's OLA member page",
+      "columns": [
+        "portfolio_id",
+        "member_slug",
+        "person_display",
+        "role_class",
+        "parliament",
+        "role_title_raw",
+        "term_start",
+        "term_end",
+        "ministry_candidate",
+        "ministry_norm",
+        "body_govbody_id",
+        "body_match_kind",
+        "body_candidate_id",
+        "body_candidate_sim",
+        "confidence_tier",
+        "source_url",
+        "source_sha256",
+        "source"
+      ]
+    },
+    "ridings": {
+      "rows": 330,
+      "bytes": 9013,
+      "sha256": "223e296a3a363d0902b81494f308a9b27477cfc9bde4f8dd8a2024a877f90118",
+      "grain": "one row per canonical electoral district",
+      "columns": [
+        "riding_id",
+        "canonical_name",
+        "normalized_name",
+        "notes",
+        "source"
+      ]
+    },
+    "riding_aliases": {
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+      "bytes": 11309,
+      "sha256": "fea5a402061edfd3fd815280a9c38cac389947496e317182ad02237fc58b71c0",
+      "grain": "one row per observed riding string variant",
+      "columns": [
+        "riding_alias_id",
+        "riding_id",
+        "raw_name",
+        "normalized_name",
+        "alias_source",
+        "source_ref",
+        "match_method",
+        "reviewed",
+        "review_note",
+        "source"
+      ]
+    },
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+      "bytes": 35149,
+      "sha256": "1d749d6abd21a144bf206ca2ed2625d92bd3bdda5189f41915eaec89797a0174",
+      "grain": "one row per (riding, person, parliament) holding; by-election parliaments emit multiple rows marked ambiguous",
+      "columns": [
+        "held_by_id",
+        "riding_id",
+        "riding_raw",
+        "member_slug",
+        "person_id",
+        "parliament_number",
+        "term_start",
+        "term_end",
+        "term_start_raw",
+        "term_end_raw",
+        "ambiguous",
+        "confidence_tier",
+        "source"
+      ]
+    },
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+      "bytes": 211444,
+      "sha256": "8f4c10b6e4adb4a3a8f3ecb40bb90e07df95392c78ccd8a761def192524e8f23",
+      "grain": "one row per MPP financial-disclosure FILING EVENT (mpp, year, as_of_date)",
+      "columns": [
+        "disclosure_id",
+        "person_id",
+        "mpp_id",
+        "mpp_name",
+        "riding_raw",
+        "year",
+        "as_of",
+        "as_of_date",
+        "income_text",
+        "assets_text",
+        "liabilities_text",
+        "gifts_text",
+        "offices_text",
+        "spouse_income_text",
+        "spouse_assets_text",
+        "spouse_liabilities_text",
+        "person_resolution_tier",
+        "fetched_at",
+        "source"
+      ]
+    },
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+      "grain": "one row per registration's yes/no government-funding answer",
+      "columns": [
+        "registration_no",
+        "answer",
+        "source"
+      ]
+    },
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+      "sha256": "aa32ec4372b53a0cce2100a10fa78fd10e5e8b6e2cefe7826370cd9a10851353",
+      "grain": "one row per declared government funder line (who paid, how much)",
+      "columns": [
+        "funding_row_id",
+        "registration_no",
+        "funder_name",
+        "funder_norm",
+        "amount_raw",
+        "amount_value",
+        "funder_org_id",
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+      ]
+    },
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+      "rows": 3439,
+      "bytes": 89465,
+      "sha256": "6ee41036916da5fc6d6b70cc4b2fd642b16e89062e5e3da97e405252aac84725",
+      "grain": "one row per additional-party line (parent company, beneficiary, coalition member, private funder)",
+      "columns": [
+        "party_row_id",
+        "registration_no",
+        "party_kind",
+        "name",
+        "name_norm",
+        "city",
+        "prov_state",
+        "country",
+        "org_id",
+        "resolution_tier",
+        "match_method",
+        "source"
+      ]
+    },
+    "registration_agents": {
+      "rows": 72,
+      "bytes": 4924,
+      "sha256": "15cd408c4a4e8c16612335e48f7c5a7798bd88db10e3ad07744aef2f24d35c70",
+      "grain": "one row per 'retained by agent' line (CL only)",
+      "columns": [
+        "agent_row_id",
+        "registration_no",
+        "agent_name",
+        "agent_norm",
+        "city",
+        "prov_state",
+        "country",
+        "source"
+      ]
+    },
+    "communication_techniques": {
+      "rows": 25036,
+      "bytes": 124942,
+      "sha256": "3c0a145505191600a2ecfe93f22e2cd1463701ceb1d218e18695a413fd801be7",
+      "grain": "one row per declared communication technique line",
+      "columns": [
+        "technique_row_id",
+        "registration_no",
+        "technique_text",
+        "technique_norm",
+        "source"
+      ]
+    },
+    "corroborations": {
+      "rows": 396,
+      "bytes": 11968,
+      "sha256": "583264688cb304e78fc8243f1909e1466edd26f46f76d2733a6c10e44ffc769c",
+      "grain": "one row per second-signal corroboration backing an entity merge",
+      "columns": [
+        "corroboration_id",
+        "node_id",
+        "entity_id",
+        "signal_kind",
+        "signal_value",
+        "source_ref",
+        "source"
+      ]
+    }
+  },
+  "redacted_fields": [
+    "registration.email",
+    "registration.phone",
+    "registration.fax",
+    "registration.street",
+    "registration.postal_code",
+    "registration_client.street",
+    "registration_client.postal_code",
+    "registration_agent.street",
+    "registration_agent.postal_code",
+    "registration_additional_party.street",
+    "registration_additional_party.postal_code"
+  ],
+  "notes": {
+    "active_set_lower_bound": "The lobbyist capture is the registry's CURRENT ACTIVE set at capture time; de-registered historical filings are absent. Any historical count derived from this data is a LOWER BOUND.",
+    "registration_status_not_captured": "The registry grid shows a status column, but it was not persisted to SQLite; all exported registrations were in the active result set at capture. No status column is exported rather than fabricating one.",
+    "skipped_historical_roster_persons": 1275,
+    "targets_distinct_grain": "registration_targets is RAW-mention grain; the same (registration_no, target, subject_type) repeats across lobbying activities. DISTINCT before counting."
+  }
+}