I really liked Tulsi Gabbard at first... but this year has got me thinking she's a little unbalanced.
Teachout has potential, as does Keith Ellison.
I'll go for a deep cut and cite Gary Winfield, the state senator for my hometown in CT. I suspect he's got dibs on the CT 3rd when Rosa DeLauro retires. He's a very Progressive/WFP oriented guy, and has the bio and legislative ability (dude is *productive *) to go far. He may not be the *next * Sanders/Warren, but I suspect in 15-25 years he's going to be a very important Progressive player.
While we're on the subject of CT politics... Murphy has a really good record on things other than gun control. My own personal politics denounces him as a Moderate Hero (and thus villain) due to his monomaniacal focus on mass-shootings, but he is actually pretty progressive on foreign policy and domestic manufacturing.
Ellison was born in '63.
