Originally Posted by rubber soul

My guess is probably not. For one thing, I don't think Manchin responds very much to intimidation tactics. Two, I don't think he fears being primaried (and indeed he could very well lose: Bernie Sanders carried the state in the 2016 primaries).

Anyway, I don't think the Dems have enough guts to even suggest primaring Manchin. They're terrified of a Republican congress (which they're probably going to get in the House at least, anyway).