John Redwood is the Conservative MP for Wokingham, and Leader of the Conservative Policy Group on Economic Competitiveness. Follow John on Twitter.
Mr Miliband has suggested that the much fancied centre of UK politics is moving to the left. Mr Blair and Mr Reid have denied any such thing. Labour are divided on whether they can shift leftwards safely or not.
Some Conservative members fear that the Coalition is dragging the centre to the left, thanks to the influence of the LibDems on Coalition rhetoric and policy. They want the Conservative leader, Mr Cameron, to be more Conservative. Some LibDems fear that UKIP is dragging the centre ground in the opposite direction, highlighting the issues of immigration and the EU which Lib Dems prefer to skate over.
So who is right? Does it matter?