So, who are the other four in your opinion? (Let me guess:) Bernie Sanders, Elizabeth Warren, Sherrod Brown, and Tammy Baldwin?
Eh, I was being hyperbolic I suppose: others I have a very favorable opinion besides those that you listed (though I forgot about Baldwin; she's fairly irrelevant compared to the others, which is strange considering she's a lesbian from a major swing state, so you'd think she'd have more hype on the national scale) include Merkley, Wyden, and Franken.
Sorry to go off on a tangent, but this discussion made me realize how few progressive stars are in the Senate, which bugs me; with many of the heroes of the left such as Warren and Sanders rapidly approaching retirement age, and with Brown and Baldwin likely to be gone after 2019, it's a shame that there is no true heir to the movement in the chamber. After Kerry left, we could have replaced him with a Warren-type; instead, we get Markey's generic ass. This year, we had a chance to replace Mikulski with Edwards, who would've easily been among the best; instead, we get the most generic Democrat imaginable.
Hopefully people like Fetterman, Teachout, and Jayapal all achieve higher office.
Harris fits the bill pretty well, doesn't she?
