✶ House of Commons · 650 seats
Who can
govern?
The Prime Minister is whoever can command the confidence of the House of Commons. On paper that takes 326 of 650 votes. In practice the line is lower: the Speaker does not vote, and an MP who has not taken the oath cannot, so 8 seats are out of play and 322 wins a division.
Majority builder
Put parties
on a side.
0 voting MPs on your government side · 322 wins a division when every voting
MP turns up · formal majority 326 of 650
Government
Unaligned / not voting
Opposition
Tap a party to move it government → opposition → unaligned.
Uniform swing
What if the votes
moved?
Uniform swing adds the same change to a party's share in every seat it contested and re-runs first-past-the-post. It ignores tactical voting, local candidates and where new parties stand, so treat it as a what-if, not a forecast.
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