Marginal seats

This note lists UK Parliament seats by marginality using results for the 2010 General Election. The results are taken from the Research Paper (RP10/36) General Election 2010 (Table 18.9)

Majorities are measured as the difference between the number of votes for the first and second placed candidates. Percentage majorities are these figures as a proportion of votes for all candidates and these are a better guide to relative marginality of different seats.

It is likely that the boundaries of parliamentary constituencies used in 2010 will be the same at the next General Election.