As of April 26th of this year:
"The fact that just one Senate Democrat in a competitive race this fall has endorsed either plan—Wisconsin’s Tammy Baldwin is on the Murphy-Merkley bill—may reflect hesitance over whether McInturff’s instincts are right."
https://www.theatlantic.com/politics/archive/2018/04/health-care-public-option-medicare/558965/
It is such a big part of the Democratic National Platform (which is what began this topic) that the Senators that are most needing to convince voters of their ideas wont touch it?
And how much of what else you mention is actually a concerted Democratic push and not just potential candidates for President getting their names in the news? I am not convinced.
I have no doubt that Democrats have ideas, the point of the whole discussion is that there is not a unifying point behind the party other than "We are not Trump". Which is a shame because I want them to succeed. The country works best with a Republican President and Democratic Congress (or vice versa).
And when you say "We have plenty of ideas, you are just not listening to them"....it is a poor communicator that blames the audience for their inability to express themselves properly.
Go Mizzou!
LN