On March 10, Republican Congressman Elton Gallegly of California announced that he has a medical condition that will prevent him from running for re-election. He had already filed to be on the Republican primary ballot, and March 10 was the deadline for candidates to file to run in a primary.
California law says if an incumbent fails to file for re-election, the primary filing deadline is extended 5 days. However, that law doesn’t apply, since Gallegly already did file. California does not permit withdrawals. Prominent California Republicans who live in that district would like to run to replace Gallegly, but it is too late for them to get on the ballot. There may be write-in campaigns in the primary. The California primary is June 6.