What happened with Bernie Sanders in the primaries? I thought he saw it through to the end and just plain lost to Biden. Not that that fact alone didn't concern me.

But I think it's a far more damning image to the party that Tulsi Gabbard qualified for the debates under the rules at the time, and then was excluded because they changed the rules. You can't play the race or gender card every time your person isn't winning, and then go out of your way to very specifically exclude the only candidate left who isn't white and isn't male. You can't really make a principled argument against the way the electoral college currently works by ignoring non-mainland delegates. You can't claim every vote should count. You can't claim the two party system is the reason you can't incorporate new, non-adversarial ideas.