BBC's election seat calculator either shows up how stupid the UK electoral system is, or how stupid the BBC election seat calculator is. Which is it UKPoleddit? : r/ukpolitics
UK General Election 2010 – Interactive Maps and Swingometers – OUseful.Info, the blog…
BMA committee elections
Calculating the swing, marginality and targets for constituencies | | The Guardian
Electoral systems across the UK | Institute for Government
How the 2019 election results could have looked with proportional representation – Electoral Reform Society – ERS