Britain's Labour party Chief Whip Armstrong kisses former Conservative MP Jackson outside the Houses of Parliament in London. Britain's Labour party Chief Whip Hilary Armstrong (R) embraces former Conservative MP Robert Jackson outside the Houses of Parliament in London as he is presented to the media after his defection to Britain's Labour party January 17, 2005. A launch of election policies by Prime Minister Tony Blair's main political opponents was blown out of the water on Sunday as one of their senior members defected to the British prime minister's party. In a double blow to the Conservatives, a new opinion poll showed they would fail to make any gains against Blair's Labour party at the next general election, widely expected in May. REUTERS/Russell Boyce