Each of the Republican factions considers the others to be either illegitimate, or at best (if they behave and vote as ordered) as Useful Idiots. (I agree, but for different reasons. There are no Conservatives left.) What all of these factions seem to agree on, regardless of their specific issues, is despising most US citizens and absolutely everybody else, extremist judicial activism, and election dirty tricks, such as gerrymandering and voter suppression. Things that the Democratic Party has plans for outlawing in a new and improved Voting Rights Act the next time we take the House. Then we can pass all of those bottled-up measures that the public so strongly approves of.
The conventional wisdom of the MSM and the Very Serious People is that Democrats are in trouble in this election cycle, with so many seats to defend, but they have reckoned without the Republicans' growing propensity for unforced errors, particularly by extreme Tea Party candidates. But now it's all of them. There is not an incumbent more Establishment than Mitch McConnell, who is being denounced for lying about repealing Obamacare but keeping Kentucky's Kynect ACA exchange and apparently all of its Federal Obamacare subsidies.