Some people say she’ll have the last laugh if she just switches parties and throws the Senate into GOP hands even before the 2022 election. That’s entirely possible, given her reported egomania. But while she can become a Republican she can’t win reelection as a Republican. Sinema is pro-choice. She’s affirmatively irreligious. She’s openly bisexual. On virtually every hot-button culture-war issue she has standard Democratic positions. There’s no place for her in the GOP and no way to win a Republican primary. Perhaps Mitch McConnell might offer to clear the field for her in exchange for making him Majority Leader. But it’s just not in his power to do. There’s a backlog of Arizona Republicans who want that seat. They’re not going to stand aside to let her take the seat as a Republican. And the state’s Republican voters won’t either.