I'll address the comments about Liz Cheney by telling you what Harvard Professors Ziblatt and Levitsky say about how democracies die and how they are saved.

(The book is fabulous and was quite timely when it came out in 2018)

Basically, they said this (page 299):

When one of the candidates (in this case, Trump) goes off the deep end and embraces autocratic methods, what will save the nation is Republicans to switch and vote Democratic . . .

1/

This requires short-term sacrifice.

The idea is not that the Republicans give up conservatism and become Democrats.

The idea is that they switch over and accept short-term political sacrifice for the good of the nation.

The authors give an example of this happening: In 2017, defeated French conservative candidate Fillon called on his partisans to vote for center-left candidate Macron to keep nutcase Le Pen out of power.

2/

Early in her own book, Cheney mentions that her voting record is more conservative than the "freedom caucus" but she wanted nothing to do with them because she could see they were unhinged.

She isn't giving up being a conservative.

She isn't going to become a liberal.

She is doing what Ziblatt and Levitsky said Republicans would need to do to save us from someone who has gone full-on authoritarian.

Their book was widely read. No doubt Liz Cheney read it.

3/

@Teri_Kanefield I read it a few months ago and I thought of her.