Something needs to change. The party must turn sharply left on both economic and social issues if it is to have a chance of regaining Congress in the future. If it does that, it will also be taking a stand on principle for the first time in a generation. The value of political courage is something that numbers alone can't measure.
They would of, the only reason the two that did run in the special elections lost is because the DNC gave them zero support basically. Moderate or Centrist Democrats are not going to win anymore. Check the article I just wrote about the party and the collapsing around them, it sadly isn't going to change unless the elites get pushed out