I always wondered what it meant to be impeached. Clinton was impeached yet he was still President and fulfilled his full termed. It's pretty much a waste of time what they are doing.
Impeachment preserves democracy. Just because only 3 presidents have been impeached, and most likely all 3 will be acquitted doesn't mean it hasn't had any affect on the decisions of the other 42. Without the possibility of being impeached, there wouldn't be much standing in the way of the guy who's in charge of the military, Department of Justice and all the intelligence agencies to be an authoritarian.
Impeachment affects every presidency.
My reading on it will be the Senate trial will be timed so as to maximize the advantage to Biden being out campaigning, and maximize the confinement of Sanders into DC for six days a week.
So those who were for Sanders get screwed a second time around by their own party!
I don't think keeping Bernie/Warren not physically being in Iowa/NH will benefit Biden that much, if at all. Bernie/Warren have thousands of people who have been canvasing for months, which is more valuable than any rally, especially in Iowa. The fact that they are too busy trying the President might actually them a little bump.
We can pretty much call SC for Biden already.
Not really sure how NV works though, but that's the third or fourth week of Feb and I feel like there's a very slim chance the trial hasn't concluded by then.