Mood box: Do Tories want to be in or out of Europe?
5 October 2010 Last updated at 14:25 BST
David Cameron has promised that no more powers will be transferred from London to Brussels - but some in the Tory party are concerned about the coalition' s attitude to the EU.
Adam Fleming got out the blue balls to ask the delegates in Birmingham to whether they want to be in or out of Europe.
The Daily Politics is testing the mood of the delegates at the Liberal Democrat, Labour and Conservative parties where people are asked to vote with coloured balls on an issue of the day.