Iowa primary kicks off high-stakes battles for Congress and governor

Iowa’s primary is setting up a fall fight that could reshape Congress and the governor’s office at the same time. What has long been a presidential launchpad is now one of the country’s most consequential midterm battlegrounds, with three competitive House races, an open Senate seat and an open governor’s race all landing on the same November ballot.

The stakes are unusually high because Iowa Republicans hold both U.S. Senate seats and all four House seats, but the map is less secure than it once looked. President Donald Trump’s record-low approval ratings, rising gas prices, an unpopular war in Iran and broader affordability worries have sharpened the political pressure, even as his hold on the Republican Party remains strong. At the same time, Democrats are trying to turn Iowa back into a true battleground by leaning into economic pain that cuts across party lines, especially in farm country where tariffs, higher fertilizer and diesel costs, factory and meat-processor layoffs and rural clinic closures are deepening anxiety.

Republicans are treating the state as a priority because of the open Senate race and the possibility of losing House seats. Vice President JD Vance visited Iowa on May 6 to boost Rep. Zach Nunn, whose suburban Des Moines district is one of at least two Republican-held House seats Democrats think can flip. National Republicans are also preparing to spend nearly $30 million on the Senate contest, a sign of how much the party expects Iowa to matter in the fight for control of the U.S. Senate.

Democrats are responding with their biggest midterm operation in years. Iowa Democratic Party chair Rita Hart has called Iowa “still” a purple state, and the party plans to have 60 field organizers on the ground by June along with a coordinated campaign staff, nearly double the field presence Democrats had in the 2018 midterms. In the governor’s race, state Auditor Rob Sand, Iowa’s only statewide elected Democrat, is running unopposed for his party’s nomination and ended 2024 with $13 million in his campaign account, giving Democrats an early financial foothold in a race without an incumbent.

The legislative map is just as volatile. In the Senate race, Democrats are choosing between state lawmakers Josh Turek and Zach Wahls, while Republicans face a contested primary for the seat being vacated by Sen. Joni Ernst, who is not seeking reelection after two terms. Iowa has not elected a Democrat to the Senate in 18 years. In the House, Iowa’s 2nd Congressional District features three Democrats and two Republicans competing after Ashley Hinson left to run for Senate, while the 4th District is open because Randy Feenstra is running for governor. That northwest Iowa seat, stretching across places like Ames, Sioux City and Council Bluffs, has shown its competitive side before: Steve King beat J.D. Scholten there by 3 percentage points in 2018 before Feenstra later widened the GOP margin.

If Iowa Republicans keep their edge, they strengthen their grip on Congress and the governor’s office. If Democrats break through here, it would signal that a state once seen as safely red is again central to the path to House control, Senate control and a broader 2026 political reset.