If you're expecting independents to vote for your party, you should probably allow them to contribute to selecting your nominee. Otherwise, people like me who would've voted for Bernie Sanders voted for Donald Trump.
> Otherwise, people like me who would've voted for Bernie Sanders voted for Donald Trump.
You're doing a really, really good job of making my point for me. I suspect the Democrats aren't all that moved by the argument "Trump supporters should be allowed to help pick the Democratic nominee!"
Then the DNC can continue to lose future elections.
I'm not a Trump supporter; I voted against Clinton, and my vote was first to Sanders. I'm happy with my vote; Trump winning has galvanized progressive coalitions in a way that wouldn't have happened if Clinton had won.
Establishment Democrats who aren't progressive enough need to die off faster. Then the Demoractic party might run candidates worth voting for.