My town is very conservative (with more Trump signs than street signs) but I do drive a couple of days of week through a town that sounds like yours, with _exactly_ the same situation as you described—many more total signs than 2016, more for Biden, but a lot of Trump signs too when there were no Trump signs in 2016.
My state is CT which is a lost cause for Republicans, but it is nice to see the Trump supporters are not afraid to show their standard Trump signs/flags and also other creative hand made signs (latest one was “Say No to Quid Pro Joe”).
The only place I've seen Biden/Harris signs...just a few at that is a black part of town in Brenham Texas.
Other than that....just oodles of Trump stuff everywhere.