Bernie Sanders of Vermont is a certainty to be elected on Tuesday. While no revolutionary, he is an outspoken socialist of the Social Democrat variety, still quite a first for the Senate.
Given that the Dems may take the Senate he could become important. Loathsome Lieberman is also running as an independent and is going to win, as Lamont ran a lame campaign. If Holy Joe decides to become a Republican then I’m guessing Sanders would become a Democrat, offsetting the damage.