OTTAWA - A new poll suggests Michael Ignatieff is by far the least popular federal political leader.

The Canadian Press Harris-Decima survey indicates 52 per cent of Canadians have a negative impression of the Liberal leader.

Only 26 per cent have a positive impression of Ignatieff, leaving him with a net score of minus 26.

By comparison, Prime Minister Stephen Harper is viewed unfavourably by 51 per cent and positively by 42 per cent, for a net score of minus nine.

NDP Leader Jack Layton earned a net score of plus 10, Green Leader Elizabeth May had a net score of minus four and in Quebec, Bloc Quebecois Leader Gilles Duceppe earned a net score of plus 20.

The telephone survey of 1,007 Canadians was conducted May 13-16 and is considered accurate within 3.1 percentage points, 19 times in 20.