Who's more likely to party switch?

[Not Me, Us]

Manchin has zero reason to switch parties. He's almost certainly going to retire in 2024, so he doesn't have any more elections to worry about. Not to mention that he generally votes with the Democrats when it truly matters, except for the Kavanaugh vote. If he was going to switch parties, he would have already. Why would he run as a Democrat in 2018, going through the most difficult race of his career, just to switch parties? No sane person would do that.