At least 9 #M4A co-sponsors vacating seats.

7 replacements favor #MedicareForAll:

Gabbard -> Kahele
Lacy Clay -> Bush
Serrano -> Torres
Engel -> Bowman
Lowey -> Jones
Luján -> Fernandez
Udall -> Luján

1 favors public option: Visclosky -> Mrvan

Kennedy III replacement is TBD.

4 other incumbents remain under credible threat by non-M4A challengers: Omar, Golden, Cartwright, Wild.

Marie Newman is the only net-new #MedicareForAll vote considered safe in the general.

Outside shot to add 10+ more, but I am personally hoping for around 6.

5 in the House: Kara Eastman, Candace Valenzuela, Dana Balter, Jon Hoadley, Mike Siegel

1 in the Senate: Jess Scarane

Hopeful that Leckey will replace Kennedy III. Also believe the 4 threatened incumbents (Omar, Golden, Cartwright, Wild) will hold their seats.

So in summary: 1 lost co-sponsor (Visclosky), 1 gained (Newman), and 6-12 potential gains.

Worth noting that while most safe new progressives are replacing #MedicareForAll co-sponsors, at least three — Bush, Jones, and Bowman — will be far stronger #M4A voices than their respective incumbents.

Neglected in this thread to mention Georgette Gómez and Beth Doglio, who are both competing for open blue seats that were held by non-M4A reps.

I'm also newly hopeful about Alex Morse's chances.