Second poll gives Cameron's Conservatives 4 point lead over Labour

The Conservative Party took a 4 percentage point lead over the opposition Labour Party in a Comres poll published on Thursday ahead of a May 7 election, hours after another poll gave David Cameron's party the same lead. The poll for ITV and the Daily Mail put the Conservatives on 36 percent, up 2 percentage points, and Labour on 32 percent, down 1 point.