Its unfortunate, but the only man who really had a chance at beating Trump was Biden, but the impeachment saga had only one casualty, and that was Biden, not Trump, since his approval numbers have kept steady and higher than before impeachment: https://news.gallup.com/poll/286280/tru ... teady.aspx
Biden was likely weakened by the constant news of his son on the Ukraine scandal, even if Democrats 'intent' was impeaching or at least 'wounding' Trump, it only killed Biden's chances and their only best chance on the 2020 election. And now the Dem's have Socialist Bernie as the front-runner, and seems nothing will stop him. It may also cost the Dem's down-ballot races, possibly the house... lets see.
I completely disagree with your first paragraph. I think absolutely Bernie Sanders can beat Trump. Bernie has an incredible base of support and if he is the nominee, he would draw a lot of new voters in, and I think this would counter trump. One of the big reasons Trump was elected is voters wanted to give a big middle finger to the establishment, and the same thing on the Democrat side is propelling Bernie to the nomination. One sure way Democrats can assure Trump's reelection is for Bernie to go into the convention in Milwaukee with the most delegates and for someone else to walk out the nominee. Nothing would piss off Sanders supporters more than this, and if somehow the man who walks out of Milwaukee ends up being Bloomberg, this is a disaster waiting to happen.
As for the debate last night, Bloomberg got crushed so it would logically seem that his momentum is stopped for now. Here are my thoughts on last night.
Sanders - He did what he needed to do. Made no major gaffes. Was not the best debater on the stage last night but he didn't have to be. He benefitted tremendously from the Bloomberg pile on. I don't suspect he won any new voters over last night, but with him leading in the polls, he should do very well.
Bloomberg - That was terrible. Probably the worst performance I have seen on a debate stage since Stockdale in the 1992 VP debate. He was totally crushed, and he looked like an out of touch elitist who knows better than the voters. A lot of people may give Tom Perez some heat and rightly so. However, if Tom Perez realized last night was going to happen and changed the rules to lure Bloomberg in so he could be taken down, it was a stroke of genius on his part. The question is, how many people actually watched the debate last night, or did they not watch and are being charmed by his TV ads? If the latter, this man is dangerous. He is still getting endorsements, and almost seems to be buying off a majority of the Democratic establishment.
Warren - She had the best debate last night. That being said, I am not sure how much last night helped her. Many people have early voted in Nevada already before this debate, so this debate would be more likely to help her in South Carolina or on Super Tuesday. The minority staffer issue happened in Nevada (Since she has trailed off dramatically I am guessing that many candidates didn't feel a need to bring this up). She could get a bump in Nevada, but I don't see South Carolina doing much, so she would likely have to look at super Tuesday states to stay relevant. (Maine and MA are two good states for her to do so for obvious reasons)
Biden - Quietly had a decent night, and was also a bit of a forgotten man with both the Bloomberg pile on and the Klobuchar - Buttigieg sparring match. My guess is he can probably get second place in Nevada and then win South Carolina to stay relevant. If this happens, Super Tuesday will be make or break for him.
Buttigieg - Had some good moments, but took shots from Bernie and Warren and also the exchanges with Klobuchar were such that they may turn off women voters. I suspect we don't hear much from him until super Tuesday
Klobuchar - Had a much worse performance than the great one in New Hampshire. Her reactions to Buttigieg make her look like someone who can be rattled. At the same time she took heat from Warren before being defended by her. She wasn't going to play in Nevada or South Carolina anyways, but she naturally is leading in the Minnesota Polls and could pull a haul of delegates from there and some other Super Tuesday states. I don't think she stays in after that, but she will have some sway at the convention.
I see Nevada as Sanders winning, followed by Biden, Warren, Buttigieg, and Klobuchar. I think only the first three will come away with delegates. In South Carolina, I see Biden winning, Tom Steyer in Second, Sanders third, and everyone else irrelevant. So going into Super Tuesday, Sanders will lead the delegate count, followed by Biden, and Buttigieg. Then Super Tuesday happens.
One other thing I found noteworthy from the debate last night. Chuck Todd asked all the candidates if the person with the most delegates going into the convention should be the nominee. Only Bernie Sanders said Yes, the others said let the process play out. Very Telling. And rumor has it that Bloomberg is already trying to buy off the superdelegates in case the convention is contested.