There will certainly be a very wide variety of voter suppression:
- Purging rolls. One trick they've used in the past is common-name flagging: Several of the commonest surnames (e.g. Brown, Jackson) are mostly black. GOP sotware probably has exemptions for 'Smith'
- Delays. In the recent past voters in Blue-leaning precincts have queued for hours to vote, while nearby Red-leaning precincts have had no delay.
- Intimidation: Trump has already called for an army of "poll watchers."
- Adjudication of mail-in ballots will be litigated. Ballot destruction is a real possibility.
- Machine rigging, poor ballot design and other gimmicks will be deployed again by cheaters.
- (Various other cheating by Reds will occur. Some top GOP officials have even cast multiple votes in recent elections.)
Recall that 2000 Florida would have gone Blue if military ballots in violation of a deadline had been rejected. Sure, the Ds didn't want to disenfranchise soldiers, but Rs would have leapt at the opportunity were colors reversed.
But possible cheating isn't just confined to Election Day.
In 2000, the Oranges tried to get states run by Reds to overturn reported results. This was resisted, but a large number of sane R-aligned officials have since been replaced with Orange-aligned goons.
The Rs will control one or both Houses of Congress and the Supreme Court. Even a single House of Congress will be able to block certification. If an impasse develops, Orange take-over will be plausible, perhaps even without violence.
Even with the Orange leader convicted of multiple felonies, he leads sharply in prediction markets. Prognosis is bleak.