Jonathan Tasini, who is running against her (Hildabeast) in November on a solidly leftist ticket.
"End the War. Medicare For All. New Rules For the Economy. Our campaign's positions reflect the values of the majority of New Yorkers. Learn about the campaign and join the discuss.."
http://tasinifornewyork.org/
If you are in New York, you can sign his petition to get on the ballot against Hildabeast. :)
That may sell in NY, but will it sell in the red states? That is the problem with democrats, there are not enough of them to win so they have to try to fool the rest of the voters.