Ontario's 3-day early voting window is now open | CBC News

Find your electoral district at the Official Elections Ontario website: https://voterinformationservice.elections.on.ca/en/election/search

Check your riding information as well, you can still vote at your election office up to 6pm on the 26th if you miss the advance polls.

Figure out if you need to vote strategically: https://338canada.com/ontario/districts.htm