Here is a useful breakdown of the election results in Croydon North from 2005. With graphs and analysis you can remind yourself how close the parties came in the last election. Click on the graphs to zoom in.
Croydon South is considered a safe Conservative seat, following just over half of the vote share in the 2005 election, compared to roughly a quarter for Labour and a fifth for the Liberal Democrats. The seat is unlikely to change hands in 2010.