Yeah this is their endgame. They have millions less voters. Their policies are extremely unpopular. It's all caught up to them so now they are doing straight up crime to hold on as long as they can. The question is, with all of our checks and balances how long will that be?
They've already lasted longer than they should have. Their multi-faceted approach is paying off unbelievably well:
1. Create or buy up news agencies and turn them into propaganda outlets. Not just Fox, but so many local channels and newspapers, and they completely dominate talk radio.
2. Overturn the Voting Rights Act, then use various measures to ensure minorities / Democrats can't vote, or their vote isn't counted.
3. Gerrymander the fuck out of states they control to ensure they are over-represented in the House.
4. Install judges who will uphold their violations of the law, including the above.
5. And new to the list: encourage (or directly enlist) foreign interference to spread their propaganda on social media, hack voting infrastructure, and infuse even more money into their schemes.
The GOP isn't new to the crime business. It's just more blatant now. In the past, they were a little more patient, meaning they'd try to change laws first, then do the formerly illegal activity. Or at least be careful about it before they changed the law. Now, thanks to their past successes, they just break the law and don't hold themselves accountable. Even if the courts rule against them, look how long it takes. The damage is long done.
If they don't lose the next election, and lose badly across the board, I think the question might not be "how much longer can they get away with it?", but "can this even be fixed any more by voting?".