There's a junior Congressman from NC, Jeff Jackson (D) who offers really candid views of the House floor. He sent out a newsletter after the vote which provided some insight on what Dems were thinking about the vote.
The Speaker knew he was going to lose those folks, but he was hoping to peel off a few votes from the minority party.
Some folks in the minority were expecting him to reach out and say, “Hey, let’s make a deal. I’ll offer you this, and I want your vote.”
But instead, he went on TV the day before and basically said, “Here is my offer to the other party: Nothing.”
The minority party heard that from him and said, “Well, ok then, best of luck.”
That said, I’m not sure the Speaker could offer anything to the minority party. If he did, and his party found out, they’d be furious, and then he wouldn’t need six votes anymore - he would need 20 or 30 or 50.
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My sense is that if he had felt it were at all possible for him to stay in power by working with the minority party, he absolutely would have done it - he just knew it wasn’t.