A new poll suggests the Conservative government is restoring a crack of daylight between itself and the Liberal Opposition.

The Canadian Press Harris- Decima survey covering a two-week period ending Sunday puts Conservative support at 33 per cent, the Liberals at 29 and New Democrats at 16 per cent.

Conservatives and Liberals have been locked in a statistical stalemate for weeks, but some recent polls have suggested a modest post-Olympic bounce for Prime Minister Stephen Harper's government.

Harris-Decima's Allan Gregg says the national Tory uptick in the poll can be attributed almost completely to B.C., where voter volatility remains high.

Gregg says the survey's "more alarming and interesting numbers" are in leadership ratings, with both Harper and Liberal Leader Michael Ignatieff experiencing a steady downward trend over the past several months.

Since November, Harper's net favourability rating among respondents went from a plus 10 to a minus eight, while Ignatieff has plunged to minus 25 from minus 19.

"There's nothing in these numbers that are cause for cheering among the ranks of either major party, let alone enthusiasm to go to the polls," Gregg remarked.