Party-line voting
In Canadian Parliament, almost every MP votes how their party tells them to. But sometimes they don't — and that's when the interesting stuff happens. This page ranks MPs by how often they stick with their party.
Method: for each recorded Yes/No vote, the majority position of each party is computed. An MP's "consistency" is the % of their votes that match their party's majority. Minimum 20 recorded votes required.
⚠️ Known limitation: floor-crossers are excluded from this leaderboard. We currently judge votes against the MP's current party, not the party they were in at the time of each vote. An MP who switched parties shows an artificially low score. Fix planned (would require ingesting per-vote membership records). MPs whose dissent rate exceeds 30% are filtered out as likely floor-crossers.
Most loyal party-line voters
Vote with their party almost every single time. (Highest first.)
Most rebellious
Break with their party the most often. (Most independent first.)
What this means
In Westminster systems like Canada's, party discipline is strong by design. MPs are expected to vote with their caucus, and most do. A 95%+ consistency score is normal; under 90% is unusual. This doesn't make low-consistency MPs "independent thinkers" or high-consistency MPs "robots" — context matters. Look at which votes someone broke rank on, not just the number.