In the recent Canadian federal election, so many people were running for election to Parliament in one constituency, there had to be a special ballot to fit all 91 names.
This happened in Carleton, where Conservative leader Pierre Poilievre was running for re-election. He lost.
Yeah, I remember the last one having something like 25 parties and in the area of 400 candidates
Edit: I checked. It was 26 parties with 955 candidates!