Dr Roger Mortimore is Director of Political Analysis at Ipsos MORI. He was co-editor of the last two Political Communications studies of British general elections, and co-author of a number of other books on British elections.Here he discusses statistics and polls undertaken throughout this years general election, including how the exit poll managed to predict the result so accurately. To see the slides from this presentation visit http://cutoday.wordpress.com/2010/05/14/election-results-just-about-right/