Justin Trudeau led the federal Liberals into the 2015 election on a promise to give the middle ground back to Canadians.
Before long, there was less middle ground.
It had already been shrinking for years when Mr. Trudeau became the Liberal Leader in 2013. He didn’t cause the polarization of Canadian politics, but he noticed it, acted on it, nudged it along. By 2021, that polarization came not only to save his career, but to define it.
