Pierre Poilievre -- The high-profile finance critic and Ottawa-area MP is regarded as a possible next in line for party leader if O'Toole loses the leadership vote. After last year's election Poilivere said the party already had a leader and he had no interest in running. However, he is deeply popular among the Conservative grassroots. In 2020, Poilivere planned to enter the party's leadership race that O'Toole eventually won, but he pulled out before an official launch saying the race would take away time spent with his young family.
Conservative Leader Erin O'Toole is to learn Wednesday from the Tory caucus whether he will remain as party leader. Here are some key players who have been involved in calls for his leadership to be reviewed.