Democratic primaries and the general election

So even the mainstream media has acknowledged that Sanders is the clear front-runner.  I gave money initially to Warren, but once it became clear she isn't registering with enough voters, I'm now giving only to Sanders.  I still expect this to come down to Sanders and Bloomberg, with the only real uncertainty being whether Sanders will prevail on the first round; if not, the super delegates will probably throw it to Bloomberg.   On the merits of what they stand for, Sanders and Warren are the easy choices by my lights; I wish I could be as confident as my diehard Sanders friends that he can actually win in the general election against Trump.  I think it's possible, but very far from certain.  He is a good bet to recapture working-class and union voters in the Midwest; he's also a good bet to lose those "suburban soccer moms" that powered the Democrats to victory in the House in 2018.  I doubt they'll vote for Trump in significant numbers, but they may sit things out.  Some Republicans that would have voted for Biden or Bloomberg will also sit out a Sanders v. Trump match.   If Sanders picks an African-American running mate, his odds go up, since very high African-American turnout will be crucial.  The unknown is how this all adds up.