If the teahadists take the Senate, (they will keep the House , courtesy of the 2010 rethug takeover of so many state legislatures, and the subsequent gerrymandering),Then impeachment is almost certain, the republicklan faction has been screaming for impeachment since before Obama took office, and that is a big part of the teabag, and it's most ardent supporters.
That impeaching a President just for being from the other party, (and black), over some truly bogus "high crime or misdemeanor", is likely to unhinge the two party system, perhaps permanently. Do the tea addled dolts think Joe Biden will just 'roll over'? Do they think they can impeach Biden as well, and have whatever tea addled goofus that replaces Boner, become president? The rethugs may be crazy, but are they that into 'kamikaze' tactics? It might bring the country to the point of civil war (a successful impeachment would be a virtual declaration). Are they that stupid, as well as bought off? I know the RW 'bubble' insulates them from reality, but they can't all be that insensate. The 'Jeerleaders', Palin, Limburger, Hateity, are purchased hot air, nothing more, or less, and their 'believers' are smaller in number than they think. I hope that all this will dry up and blow away, but this is more 'white knuckles' than popcorn time.