“We’re in a period now with a former president who has grievances of his own party and he’s using his clout and his megaphone and his power to attempt to exact revenge on those individuals. And in certain states where Trump is popular or where an incumbent political figure has taken a deeply unpopular political position, you are seeing some internal opposition,” said Matt Mackowiak, the chairman of the Travis county GOP, in Texas.

He added: “I think we’re living in a time now where party officials don’t feel as duty-bound to support every member of the party, particularly if they’ve gone in a different direction on a fairly important issue.”…

Moore argued that the involvement of officials in Trump’s efforts to undermine his opponents could actually undermine the state parties.

“I would argue it actually weakens the party in the long term. It reduces the credibility of chairs, especially when they endorse crackpot candidates against serious US senators,” Moore said. “The big success of the party in the past decade is improved infrastructure, so when sitting US senators don’t play ball with the party it reduces the quality of the infrastructure – like field programs, data, etc.”