“In early June, Bush 43 announced his intention not to vote for Trump,...”
I thought that was denied.
Personally I think the leak was put out there by Bush to get a bunch of headlines and then walked back quietly so that only people who pay attention would notice. BUT he has deniability - he can claim he never said it and it was denied. But he put it out there and the damage - such as it is coming from a loser like Bush - is done. Purposeful. And directly from Bush, no way one of his people would do that without his sign off.
Fact: W will not vote for Trump. No way, no how. He's a uniparty hack who loved Hillary, loved Obama, loved Bill Clinton, and loves Biden. The one guy he hates: Trump.