Open Innovations

Who has a majority?

In UK general elections we use first-past-the-post to decide who wins each constituency - whoever gets the most votes gets to be the MP. In a two-party system the "winner" will be elected by more than half of the votes. In today's multi-party system, you can get well under half the votes and still win. But ballots don't represent everyone who can vote - the electorate. When elections or constituencies have low turnout, the fraction of the electorate electing a candidate drops even further. Here are some maps of the UK where the winner has:

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Visualisation: Open Innovations / Data: House of Commons Library (2019).