Democrats picked up three seats from Republicans, making good on some prior anomalies and realigning correctly. Colleen Hanabusa (HI-01), Cedric Richmond (LA-02) and John Carney (DE-AL) all won. Of those, I would say Hanabusa and Richmond will join the Progressive Caucus. In AL-07, Terri Sewell replaced Artur Davis. She’s a lot more progressive than he ever was, and she will likely join the caucus. David Cicilline (RI-01), the replacement for Patrick Kennedy and another openly gay member of Congress, is likely to join (Patrick Kennedy never did). The race that a progressive lost in a primary, Carolyn Cheeks Kilpatrick (MI-13), was over ethical issues, and she’ll be replaced by Hansen Clarke, likely to join the caucus.
What’s likely, then, is an increase in the ranks of the Progressive Caucus numbers. Even if they opened the floodgates on the Blue Dog Caucus, which they limit, they won’t increase their numbers.