What is the minimum vote share a party could obtain and still win a majority in a UK General Election?
Inspired by the US equivalent - what is the minimum total vote share that a party could obtain while still winning over 325 seats in the Commons? What is the smallest share of the vote that a party has obtained in the past while still obtaining a majority?
As far as assumptions go, it makes sense to assume a constant, sensible turnout across all seats - otherwise the answer is practically 0% - and that all constituencies are contested by the candidates that have declared for the 2019 election. Has anyone done the maths on this?