Iowa voters head to the polls Tuesday to select their party's standard-bearer for the open Senate seat being vacated by Republican Sen. Joni Ernst. The primary contests will determine which Democrat and Republican advance to the general election, setting the stage for a high-stakes battle in a state that has trended red in recent cycles.
In the Republican primary, Rep. Ashley Hinson holds a clear lead over challenger Jim Carlin, a former state senator. Hinson, a two-term congresswoman from Iowa's 2nd District, has consolidated establishment support and outspent Carlin significantly. Carlin, a conservative activist, has run to Hinson's right, criticizing her voting record on immigration and spending, but has struggled to gain traction against the well-funded incumbent.
On the Democratic side, state Rep. Josh Turek and state Sen. Zach Wahls are locked in a competitive primary that has become a proxy battle between the party's moderate and progressive wings. Turek, a moderate Democrat from Council Bluffs, has emphasized economic pragmatism and rural outreach. Wahls, a progressive from Coralville, has championed climate action, Medicare for All, and campaign finance reform. The outcome will signal which direction Iowa Democrats intend to take as they seek to reclaim a Senate seat they have not held since Tom Harkin retired in 2015.
Polls close at 9 p.m. EDT, and Decision Desk HQ is tracking live results. The race has drawn national attention as both parties jockey for control of the Senate in 2026. Republicans are defending a narrow majority, and Iowa is seen as a likely hold, though Democrats hope a strong candidate can make the race competitive in a state that backed Donald Trump twice.
The primary also highlights internal party dynamics. Hinson's lead in the GOP race reflects the party's consolidation around incumbents, even as Carlin's campaign tapped into frustration with Washington. For Democrats, the Wahl-Turek contest mirrors broader ideological struggles playing out in primaries nationwide, as the party debates whether to lean into progressive policies or pivot to the center to win back swing voters.
Whoever emerges from the Democratic primary will face a tough general election environment. Iowa has shifted rightward in recent years, and Hinson is a formidable fundraiser with a proven track record. However, Democrats see an opening if they can tie the Republican nominee to controversial policies on abortion and social spending, issues that have animated suburban voters in other states.
As results trickle in, political operatives in both parties are watching closely. The outcome will not only determine the November matchup but also offer clues about the direction of each party in the Hawkeye State ahead of the 2028 presidential cycle.
