Who will run in California's 31st congressional district now that Democrat Grace Napolitano is not running for re-election

 

A solidly Democratic district. 

Source:  Ballotpedia

California  U.S. House districts were redrawn after the 2020 census.

Roll Call, 7/210/2023

While the open seat likely won’t shift the balance of power in the House, it already has sparked the interest of a number of Democrats, including state Sens. Bob Archuleta and Susan Rubio. Napolitano endorsed Archuleta after making her retirement announcement.

 

Wikipedia

A lot of folks, including Bob and Susan, have already tossed a hat into the ring.

Other dropouts:

Debbie Lesko, R, AZ-8.  (11/28/2023

Anna Eshoo.  D, CA-16.  (11/29/2023)

Tony Cardenas, D, CA-29.  (11/29/2023)

Ken Buck, R,CO-4.  (1128//2023)

Victoria Spartz, R, IN-5.  )(11/28/2023)