Daten: Hier hat der CPC von Pierre Poilievre seinen Stimmenanteil in der Innenstadt von Toronto ausgebaut

I saw this article earlier, but I don’t understand how they were able to map out the poll-by-poll results for 2025. From what I understand, Elections Canada won’t release those numbers until the fall, and without that it’s difficult to make a graphics like this. I guess they could have gotten the numbers from a party, since they track the poll-by-poll results, but that would be a rather complicated method.