Canada

I expect to see blue ones on lawns, fences, and littering the city over the next year or more. That’s common here. The other parties clean up pretty fast. Conservatives and their supporters trash the world.

Typically, the local campaign picks up the signs so the person living there doesn't have to deal with it (and so they can be reused in the next election).

It sounds like whoever ran the Conservative campaign in your area hasn't organized proper sign retrieval yet. Maybe the sign volunteers ghosted them, maybe the sign lead flaked out, or whatever.

In my area we were instructed to get all signs down before 48 hours. In my area the conservatives and liberals got most signs down by 48 hours, the NDP still had a solid number up after 72 hours.

So I assume it’s as much to do with the specific campaign and not a nationwide issue.

One one in my neighbourhood. Guy also has a Poilievre banner, and a Polievre Flag. All three on display. The sign is the candidate's sign though. I thought there was a regulation about collecting them within a certain time after an election, but haven't bothered to look it up. Seems to me once the election is over, everyone in a neighbourhood should re-focus on common interests, not political differences.

Lots of blue signs still everywhere in my little town

In my neighbourhood they're all gone. There are quite a few liberal ones left sitting out on some intersections though.

@PlaidBaron In my neighborhood most were gone in the morning and all are gone by now, but I did see a few stick around for a few days.