He called an early election soon after Trump was elected to try get himself an even stronger majority while running on an anti-Trump platform, propping up himself as the only person who can go against Trump for Ontario (yeah, the facist-inspired playbook). He sort of succeeded at it, given that the cycle was short, there was rather little time for other parties to rally, a lot of people couldn't find the time to vote, and enough people bought into the idea that he can stand up to Trump despite people not actually liking him. The turnout was less than 50%.