Why U.K. prime ministers are easier to replace than Canada’s

Political watchers say the U.K.’s recent churn in prime ministers reflects both the fallout from Brexit and deeper differences in how parties and MPs operate compared with Canada. In Britain, party caucuses have more room to challenge a leader, and internal rebellions are more accepted. By contrast, Canadian parties tend to keep leadership struggles more contained, and formal tools to remove a leader are used less often. Experts cited in the article also point to the size of the U.K. House of Commons, the strength of party traditions, and a more fragmented political environment as reasons leaders there can be pushed out more quickly than their Canadian counterparts.