Ontario's political parties have been preparing for months for the possibility of an early election, but next week’s snap election call has pushed planning to a fever pitch.

Ontario Premier Doug Ford is sending voters to the polls 15 months early, with a snap election he says is needed to deal with the threat posed to Ontario’s economy by U.S. President Donald Trump and his avowed tariffs on Canadian exports. Key things to know ahead of Wednesday’s expected election call:

The leader of Canada’s most populous province says he will be calling an election in Ontario because he says he needs a mandate to fight U.S.