As Wisconsin demonstrated, the attempts at voter suppression will likely backfire. If the Republicans had agreed to mail-in balloting or a delayed primary, they might have held on to the state supreme court seat they lost, but what they ended up doing kept Republican voters home (why go vote in person in a pandemic when there's no top of the ballot choice to make) while the Democrats stood in line (between the obvious attempt to make them stay home [Streisand effect] and the real impact of their top of the ballot choice). I'm just some schmuck in another state and I could see the likely outcome of the attempt at voting suppression before it happened, but Republicans seem to have only two tools in their toolbox anymore: tax cuts and voter suppression, and those tools aren't doing the job now and hurt more than help.

Doesn't your mail in ballot just need to be postmarked by election day to count? Its not the day its received, its the day its sent that counts.

probably depends on the state?