It would come down to various state laws on the electors. You vote for a set of electors. Electors are chosen by the respective party and are fiercely loyal. Their votes are bound by each state's laws however.
I believe so. Somebody on the HRC campaign iirc
https://www.zerohedge.com/news/2017-11-26/ex-clinton-foundation-official-tied-chinese-kindergarten-embroiled-bizarre-sexual-ab
Requires Senate approval if Flynn is not on the ballot. Good luck with that
Flynn is probably part of the succession in '24. Cheers, we all want him in the White House asap