If your not sure who to vote for in the forth coming UK elections on the 5th May. This site may help you decide Vote for Policies. The idea is that you read anonymously the key points from all the parties manifestos then decide which you like the most. The site will then provide you with a breakdown of how you scored. So you may found you have voted for mostly Labour policies, but you may have found you also voted for BNP and the Green party polices as well. Its an interesting way of comparing the different policies on all the main issue of Crime, Welfare, Immigration, Education and Environment etc.

Not sure wether this helps decide with local election candidates. In Cambridge it might be useful.