They just yell how everything is out to get you. Foreigners, globalists, the poor, the rich, the elite, the underclass, the brown people, Bill Gates, socialists, THEY ARE ALL OUT TO GET YOU!!!!
What makes you even remotely think they want to do this? Distrust in the government is a pillar of their entire platform. It's like...the pillar.
It barely hurt them in an election where the GOP nominee got the most votes of any GOP candidate in history. Also I don't think "voter fraud" is not the same exact argument as "mail-in voting is rigged"; especially not when their targets post election were the voting machines and ballot counters. The broad point the GOP has well-established with it's supporters is "Do not trust elections, especially when you lose" which targets the process in totality. They have no reason (or interest) to fix suppressed GOP voters; but they have every reason to throw gasoline on the suppression of Democratic voters.I think the issue here is that this time it actually hurts them. Prior to the election they all joined in with Trump in pushing that mail-in voting was bad. The end result is them continually being shocked during the election when the mail-in voting started and Biden got significantly more of that vote. That was at least in some part to their base being told that they shouldn't vote that way. Then they spent several months telling their voters that Dems had stole in the Presidential election. Fast forward to the Senate runoffs and they lose two seats in Georgia. So, they're now at a point where their voter base doesn't trust mail-in voting and believes that elections are rigged.
There's always talk about how Republicans try to suppress voter turnout, particularly in minority communities. But they may have inadvertently done that to their own base by convincing them that their vote is meaningless because Democrats have found a way to rig elections in their favor.
Unfortunately this is tragically true.When you view the other party as out to get you, your way of life, livelihood etc. it's really not hard for you to keep your party in check because even though what you're doing is probably hurting your people more. You're directing their anger elsewhere so it blinds them. It's the same strategy that basically everyone in a position of power has used for all of history and it still works.