Not entirely, but mostly, irrelevant. Virtually no one showing up at a candidates' rallies is undecided. Meanwhile, Biden's campaign ran circles around Trump's campaign the entire time, crushing and overwhelming him on the airwaves reaching many millions of voters more than Trump, seeing a Biden completely different from the real one, but with zero counter message on some networks entirely, it became the prevailing view. Trump's supporters sat on their behinds and kept their wallets closed in 2018, 2020, and again in 2022. This is the laziest and most disengaged the GOP base has been since Trump became the standard bearer, and not amount of people hurling insults at those who point out this reality changes the fact it is reality. If isn't a party, parade, etc. they aren't there. They left Trump's endorsed candidates - and Trump himself - twisting in the wind with no support and no funding leaving them to be crushed by the Democrats (whose base has no problem forking over mountains of cash to each candidate from small donations) and begging McConnell and GOP establishment PACs to come to their rescue (but those are only supplemental support, not supposed to be the main source of the campaign war chest).
Trump destroyed Biden in 2020.
The Rats continued to stuff the ballot boxes in the key battle ground states long into the following day. Biden won the Wednesday after election day.