All seven Iowa legislators who faced competition for their party’s nominations prevailed in the June 4 elections. The outcome was a reversion to normal following a tumultuous 2022 cycle, in which six Iowa House Republicans lost their primaries. Two years ago, Iowa’s new political map forced three pairs of House members to face off against each other, and Governor Kim Reynolds endorsed challengers against several more GOP lawmakers who had opposed her “school choice” plan.

Crucially, Reynolds did not endorse any 2024 candidates running against incumbents. On the contrary, she backed one of the incumbents in a tough primary.

In addition, property rights proved to be a less potent issue here than in South Dakota, where fourteen Republican lawmakers lost to primary challengers on June 4.

Although Iowa saw no upsets, several of this year’s legislative races revealed that Republicans could be vulnerable to candidates from the right. The two challengers who came closest to knocking off incumbents were both vocal opponents of using eminent domain to build CO2 pipelines.

This post covers the primaries from the narrowest winning margin for the incumbent to the most comfortable victory.

UPDATE: Unofficial results show Bloomingdale won the nomination by 1,729 votes to 1,112 (60.8 percent to 39.1 percent). Original post follows.

Four of the 64 Iowa House Republicans have competition in the June 4 primary, and the most closely-watched of those elections will happen in House district 60. State Representative Jane Bloomingdale held off a primary challenger in 2022, even as several of her GOP colleagues failed to secure their nominations. She now faces John Rosenfeld, who is running to her right on several issues.

In a late twist, Governor Kim Reynolds endorsed Bloomingdale, even though the incumbent voted against one of the governor’s top legislative priorities last year and has consistently opposed GOP efforts to ban abortion in Iowa.

UPDATE: Unofficial results show Brown won this primary by 2,546 votes to 2,273 (52.8 percent to 47.1 percent). Original post follows.

Two Iowa state senators and six state representatives face competition for their party’s nomination in the June 4 primary. The most intriguing match-up is unfolding in Senate district 30.

Two-term Republican State Senator Waylon Brown has a huge financial advantage and the backing of powerful interest groups. His opponent Doug Campbell, a retired pharmacist and former Mason City school board member, is running a low-budget campaign powered by grassroots outrage over a proposed CO2 pipeline.

The outcome should signal whether the controversy over property rights in rural Iowa is salient enough in GOP circles to overcome the advantages of incumbency. If Campbell prevails, Senate Republicans may feel pressure to consider eminent domain legislation in 2025, after blocking all such bills in the Commerce Committee for the last several years.