Iowa

Iowa is a Midwestern US state of approximately 3.2 million people, consistently ranked among the top two producers of corn and soybeans in the country. Its economy is anchored by agriculture, pork and beef processing, and ethanol production. The state's political character has shifted decisively rightward since 2008: Barack Obama carried Iowa twice, but it has voted Republican in every presidential election since 2016. Its four congressional seats are predominantly held by Republicans, and its two Senate seats have been Republican for most of the past two decades. Iowa holds the first caucuses in the presidential nominating calendar, giving it outsized national political attention every four years.

In the 2026 Senate race, Republican Ashley Hinson faces Democrat Josh Turek, a state representative and former Paralympian, for the open seat vacated by Joni Ernst, who did not seek re-election. Cook Political Report moved the race from Likely Republican to Lean Republican on 3 June 2026, with analyst Jessica Taylor citing the Iran War's effect on fuel and fertiliser prices for Iowa farmers as the direct cause . Iowa's corn and soybean producers are among the country's heaviest fertiliser buyers; anhydrous ammonia prices track natural gas spot prices, so a Gulf supply disruption compresses farm margins through two channels simultaneously. Turek won the Democratic primary on 2 June with 63% of the vote.

Iowa's 2026 Republican governor primary produced a secondary signal: MAHA-backed Zach Lahn defeated Trump-endorsed Randy Feenstra, suggesting the state's rural conservative voters are more willing to break from the party establishment than their voting record implies . The Senate race and the governor primary together make Iowa one of the more consequential non-coastal states in the 2026 cycle.