Company lists · Data refreshed September 2026
Top 25 Legislative consulting firms based in Canada
RevenueBase identified 171 legislative consulting firms headquartered in Canada as of September 2026 and tracks 1,564 professional contacts across them, including 836 with verified work emails and 180 with mobile numbers. Ottawa is the largest hub.
This list covers legislative consulting firms headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest legislative consulting firms based in Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 174 | ||||
“Founded in September 2011, TACT Intelligence-conseil is composed of a group of experienced, professional communicators seeking to create a Québec-owned consulting agency.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 127 | ||||
“StrategyCorp provides government relations, strategic communications, and management consulting strategic counsel to the leadership of organizations across Canada, the United…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | Earnscliffe StrategiesIndirect evidence | 78 | |||
“Founded in 1989 and independently owned by our principals, Earnscliffe operates from offices in Ottawa-Gatineau, Toronto and Vancouver.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 77 | ||||
“Established in 1998, Sussex Strategy Group is Canada’s leading government relations, strategic communications, digital advocacy and business advisory agency.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 42 | ||||
“Alberta Counsel offers effective public relations and legal services to our clients, from new ventures and not-for-profits to municipalities and multinational corporations.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 39 | ||||
“We’re a team of trusted advisors and strategists who understand government, public opinion and how to shape decisions at the highest levels.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 36 | ||||
“Emerging Ag is a boutique international consulting firm providing communications and public affairs services to clients in the agriculture, food, and health sectors.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 36 | ||||
“For over 25 years TACTIX has been a trusted advisor to leading Canadian and Fortune 500 companies, offering unparalleled experience in solving complex government relations threats…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | Mcmillan VantageIndirect evidence | 35 | |||
“When you have a pressing challenge, McMillan Vantage has the senior expertise with a deep understanding of what you need to know, when you need it most.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 33 | ||||
“Gilbert's LLP is an agile, energetic law firm with an astonishing track record.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 30 | ||||
“Compass Rose is a public affairs firm where helping companies and organizations find the common good is at the core of who we are and what we do.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 25 | ||||
“A multi-national public affairs firm providing corporations, associations, and not-for-profit organizations with strategic advice and support in building connections to influence…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 24 | ||||
“Nous sommes une firme de communications stratégiques et de relations gouvernementales.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 24 | ||||
“COPTICOM, Stratégies et relations publiques, est une firme de services-conseils spécialisée dans les dossiers d’affaires publiques.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 23 | ||||
“Sandstone Group Sandstone Group, based in Ottawa, specializes in providing strategic advice to corporate executives in matters of public affairs, government relations, crisis…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 22 | ||||
“Canadian Strategy Group (CSG) was founded in 2008 in the heart of Alberta’s capital.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 19 | ||||
“Helping you shape policy, reputation and growth.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 18 | ||||
“New West Public Affairs is a national public affairs firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 18 | ||||
“Bluesky Strategy Group delivers public affairs, strategic communications, government relations, and media relations advice and execution.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | 18 | ||||
“Iris Communications is an integrated strategic communication, government relations and public affairs firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 18 | ||||
“Sutherland is a full-service communications, public affairs, and government relations firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 18 | ||||
Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | 18 | ||||
“MERCURE Conseil est une firme-conseil boutique spécialisée en affaires publiques et gouvernementales ainsi qu’en communication corporative et financière.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 16 | ||||
“EXPERT Government Relations.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 15 | ||||
“At the Armstrong Strategy Group, we know that relationships and experience matter.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 171 legislative consulting firms based in Canada
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Legislative consulting firms based in Canada at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among legislative consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Canada whose own description of what they do matches “legislative consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among legislative consulting firms, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 836 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Legislative consulting firms by metro
- Legislative consulting firms in Ottawa41
- Legislative consulting firms in Toronto41
Frequently asked
How many legislative consulting firms are there based in Canada?
RevenueBase identified 171 legislative consulting firms headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
TACT, headquartered in Montreal, tops this list with the largest team on record.
Which city has the most legislative consulting firms?
Ottawa leads with 41 headquartered companies, followed by Toronto (41) and Montreal (15).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 836 verified decision-maker contacts tracked across these 171 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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