Make the difference in Greater London
Choose one of the following marginals...
1.78% Swing needed to overturn Dean Russell
Labour in second placeVote in Watford
5.36% Swing needed to overturn Anne Main
Lib dems in second placeVote in St. Albans
Uxbridge and Ruislip South
5.39% Swing needed to overturn Boris Johnson
Labour in second placeVote in Uxbridge and Ruislip South
* The swing needed is the percentage of the voters in this area that, if they changed their vote from the sitting MP to the second place MP would overturn the sitting MP. The lower the number the easier it is to overturn the current MP.