UPDATE: A special district nominating convention selected Doug Campbell as the GOP candidate on August 19. Original post follows.

State Senator Waylon Brown announced on July 8 that he is resigning his Iowa Senate seat, effective July 10. Brown chairs the Iowa Senate Commerce Committee and has served as majority whip (the fourth-ranking position for Senate Republicans) since the 2023 legislative session. He was first elected to the legislature in 2016.

In a written statement, Brown touted various policy accomplishments but did not explain why he is stepping down. He said, “I look forward to my next chapter,” without indicating whether he has a new job lined up that would be incompatible with serving in the legislature. Bleeding Heartland’s efforts to reach Brown by phone and email were not successful. His campaign Facebook page was taken down the afternoon of July 8; no new content had been posted there since an appeal to voters on the day of the June 4 primary.

Although Iowa legislators occasionally resign during an election year—sometimes to accept a new job—it’s unusual for an incumbent to spend heavily on a tough primary campaign, then step down weeks after winning.