In a first-past-the-post system, redrawing constituencies is essential. Had the UK, in the 2019 election, held on to the same boundaries used in 1945, the voters of Milton Keynes and the northernmost half of Buckinghamshire, for example, would have found themselves represented by a solitary MP, as opposed to the three standing today.
Redrawing boundaries to better reflect the growing conurbations and concentrations of the nation’s population can theoretically lead to a more representative parliament at Westminster. But it doesn’t always work that way.
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