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Canadian Politics

Canada is a parliamentary democracy on the Westminster model and a constitutional monarchy — King Charles III is head of state, represented by the Governor General, but real power sits in the elected House of Commons. Voters in each of the constituencies (“ridings”) elect one Member of Parliament by first-past-the-post. The leader of the party that can command the confidence of the Commons becomes prime minister; reach a majority of seats and you can govern alone, fall short and you lead a minority government that has to win votes case by case.

Five parties matter federally: the centrist Liberals, the centre-right Conservatives, the social-democratic New Democrats (NDP), the Quebec-sovereigntist Bloc Québécois (which only runs in Quebec), and the Greens. Power has swung between the Liberals and Conservatives for the whole of Canada's history — no third party has ever formed a national government.

The Commons, 2004–2025

Each column is one federal election; the stack shows how the seats in the House of Commons split between the parties. Step from Paul Martin's fading Liberal government in 2004, through Stephen Harper's Conservative years, the “orange wave” that briefly made the NDP the official opposition in 2011, Justin Trudeau's 2015 majority and the minorities that followed, to the 2025 election that returned the Liberals under Mark Carney. Switch to vote share to see the popular vote — which, under first-past-the-post, can diverge sharply from the seat count (in 2019 the Conservatives won the most votes but the Liberals won the most seats). The grey line is turnout. Tap a column for the result.

2004–2025 · seats — tap a column

Seats as returned at each general election. The House grew over this period — 308 seats through 2011, 338 from 2015, and 343 in 2025 — so the columns are not all the same height; the dashed line marks the 172 needed for a majority in the current 343-seat House. Vote share is the national popular vote. Sources are listed at the foot of the page. Last reviewed June 2026.

The prime ministers, 1993–2025

The coloured bands are the prime ministers; the line traces either the seats won by the largest party or turnout, so you can see how commanding (or precarious) each government's position was. Tap a band for the PM and the era.

1993–2025 · the prime ministers — tap a band

Bands are the prime minister of the day; colour is the PM's party. Mid-term handovers within a party are shown as one band's end and the next's start (Chrétien to Martin, Trudeau to Carney). Sources are below.

The parties

Sketches of where the federal parties stand today, with a few concrete positions to make them easier to compare. They summarise stated positions and are necessarily simplified; there is real range within each party.

Liberal Party

The natural party of government for much of the 20th century, sitting in the political centre and tacking left or right as needed. Its support is strongest in the big cities, among immigrant and younger voters, and across Atlantic Canada. In government since 2015 under Justin Trudeau and, from 2025, the former central banker Mark Carney.

Conservative Party

The main centre-right party, formed in 2003 by merging the old Progressive Conservatives with the Western-based Canadian Alliance. Its base is in the Prairie provinces, rural and suburban ridings, and among voters focused on the cost of living. Led since 2022 by Pierre Poilievre.

New Democratic Party

The party of the left, rooted in the labour and farmer movements. It has never formed a federal government but has shaped policy from the wings — universal public health care traces back to its Saskatchewan roots — and propped up the Trudeau minority through a 2022–24 supply deal. It lost heavily in 2025.

Bloc Québécois

A Quebec-only party that runs candidates solely in the province and champions Quebec's interests and sovereignty. It can never form a national government, but a strong Quebec showing can make it a decisive bloc in a hung Parliament. Centre-left on most economic and social questions.

Green Party

Built around environmental policy and climate action, with a handful of seats and a small but committed base. It has at times held the balance in provincial legislatures, but only a few seats federally.

At a glance

The three largest national parties on some headline questions — a simplification, with real range within each.

Issue Liberal Conservative NDP
GovernmentActive federal roleSmaller, restrained governmentBigger public sector
TaxesCentrist; targeted reliefLower across the boardHigher on wealth & firms
ClimateA priority; market toolsSceptical of carbon pricingAggressive action
EnergyMixed; transitionPro oil & gasGreen transition
Health careDefend & extend public carePublic, with more private roleExpand pharmacare/dental

Sources & notes

A note on how this page was made: the charts, the data behind them, and some of the drafting were put together with the help of AI tools. I've checked the headline figures against the public record (party seat totals and the popular vote match the official results) and flagged where data is approximate, but any mistakes are mine — if you spot one, please let me know. The party descriptions are my own plain-English summary of contested politics; I've aimed to be fair rather than to take sides.

Some of the figures in the charts and tables on this page were compiled with the help of AI tools and may contain errors or be out of date. They are shared in good faith for general interest only — not as professional, financial, investment or purchasing advice — and should be checked against the cited primary sources before you rely on them.