The Democrats have a membership of millions. If they find someone who isn't objectively a garbage person, I guarantee they win. You'll still see the "must vote blue" crowd vote D because let's be real, they'll do as they're told every time. And you'll also get the votes of the people who believe in a better world.
Win win, but the millions of D voters will continue to sell the line that they are powerless to sway thier own party.