General Discussion

It doesn't look like you're asking the question you meant to ask.

What we need in order to win is candidates who generate mass public enthusiasm. Obama managed that, and did so because the vast majority of people who voted for him thought he would be much further to the left in his approach to the presidency than he was.

That doesn't mean people didn't realize compromises might have to be made, but they thought he would finally be a president who mostly stood up to the right-wing attack machine, rather than letting them control the post-election narrative(and leaving it largely unchallenged when they spread the claim that his victory was not a vote for progressive transformation on the part of the public).

If our nominee's strategists had centered her fall campaign on the platform we created, a strongly popular platform that had us in a ten to twelve point lead going out of Philly, rather than centering it on going negative on Trump-when we already had years of proof that negative campaigning only works for Republicans-we would not have been in a situation where it looked-it wasn't true, but it LOOKED-as though our party itself thought our candidate and our ideas could not win on the merits.

We could have elected HRC in a landslide and withstood the Comey/Russian thing if we had been running a fall campaign based on what was good about our party and our candidate and our policies. We couldn't win, and we can never win again in any future election, by basing our strategy on saying "their candidate is a monster".

And we could have elected our nominee, the person we DID nominate, if her campaign had made sure to send her to the upper Midwest over and over again with a message that said "yes, we admit that you've been left behind economically, by presidents of BOTH parties, since at least 1981-THIS is what we're going to do to change that". Doing that would not have required us to say anything less about defending choice, OR about racism, misogyny, homophobia, transphobia, or any of the other things we are all equally committed to fighting.

There are some answers for you.
I'm not saying we should have nominated Bernie. That discussion is over. What I'm saying is that a strategy of partnership, passion and engagement can get us votes we aren't getting now, and win those votes without abandoning anybody who votes for us now.