They will be deploying multiple strategies, including Pre-election voter roll purges, gerrymandering, new Federal ID laws, closing voting places in Democratic districts, etc.
Then they will deploy strategies on Election Day itself, like posting ICE at polling places for security, and then have them do preliminary ID checks of people in the line,.followed by beatings of anyone who talks back, especially first thing in the morning. Widely broadcast video on Election Day morning of active polling places ICE beatings across the country should sufficiently intimidate people from exercising their right to vote for the rest of the day (although there is a good chance that a LOT of people would react just the opposite, and flood the polling places in defiance).
And they even have a POST-Election Day strategy. The biggest thing that has made MAGAs claim election fraud, are the write in ballots that arrive AFTER election day. They don't like a MAGA win on election day, only to have that win evaporate as the write-in ballots arrive and get counted. So they want to stop the count on Election Day.
So they'll take a couple of days for the initial count to settle, and if they spot potential trouble from write-ins, they'll raid the states election HQ, and confiscate all the ballots, machines, data, etc. then declare the winner themselves.
They have Pre-, During, And Post- Election Day strategies, and probably a lot more than I outlined. You have to watch these scumbag MAGAs, they've cheated at everything in their entire lives, that's where most of their expertise lies.