@evan As recently as a month ago, PM Trudeau believed he was the Liberal with the best chance of defeating Mr. Poilievre [0]. He's been trying various measures for the last year to see if he could reverse the polls, without success, but something might yet come up — maybe the new US Administration. The PM's confidence has been shaken this week by the loss of support in his caucus and cabinet, but he hasn't decided yet.
[0] When you consider the alternatives, he might be right.