Most of the Republican Party needs to go with them.
After the Nazis and the Confederates lost their respective wars they were banned from politics entirely. The Republican/Democrat Party has done more damage to this country than all the wars of the past century combined. I think every Republican/Democrat elected official, current and former, should be banned from politics for life, even the few good ones. It would be worth it to clean out the mass of horrible traitors.
If change is going to come in our lifetime the two party system will have to be the mechanism. While there are crooks and RINO’s in the Republican party, the entire party hasn’t been consumed by the left. So I disagree with the Republican part of your statement and believe it can adapt and be taken over just like the left completely destroyed the Democrats in the wake of Watergate, the Democrat party can not be changed in any reasonable timeframe.