A month from today (September 10th), federal Conservative party members choose a new leader.

And a new Leger poll, conducted in collaboration with the Association for Canadian Studies, suggests Ottawa MP Pierre Poilievre remains the heavy favourite, but he trails former Quebec Premier Jean Charest for support among all Canadian voters.

The survey suggests 44-percent of Conservative voters believe Poilievre would make the best party leader.

Charest is backed by 17 per cent of party members.

But among all Canadians polled, Charest has support from 22 per cent while Poilievre is backed by 16 per cent.

In addition, more than one in four Canadians polled say a Poilievre victory would make them less likely to vote Conservative in the next election, compared with one in five who say that about Charest.