A political newcomer backed by the Make America Healthy Again movement pulled off one of the biggest surprises of the election cycle Tuesday, narrowly defeating President Donald Trump’s endorsed candidate in Iowa’s Republican gubernatorial primary and sending a clear message about the growing influence of grassroots activists within the GOP.
Zach Lahn, a farmer, businessman, and father of seven, emerged victorious from a crowded five-candidate Republican field, edging out U.S. Rep. Randy Feenstra by fewer than 2,000 votes. With more than 95 percent of ballots counted, Lahn captured 37.79 percent of the vote compared to Feenstra’s 37.01 percent, according to The Associated Press.
We did it!!!
Thank you IOWA!
IOWA FIRST!
— Zach Lahn (@ZachLahn) June 3, 2026
The result stunned many political observers. Feenstra entered the race with strong name recognition, years of elected experience, and a coveted endorsement from President Trump. Lahn, by contrast, ran as an outsider who embraced the populist themes of both the MAGA and MAHA movements while positioning himself against what he described as entrenched political and corporate interests.
“How about this? We the people!” Lahn declared during his victory speech. “I don’t have to tell you this but nobody thought that this could be done. We were outspent, opposed by the establishment, told to wait our turn.”
“Well, tonight the people of Iowa had something to say about that. That we’re not going to wait anymore!”
Lahn’s campaign centered heavily on public health concerns, particularly Iowa’s rising cancer rates, an issue that has become a major focus for many MAHA supporters. Throughout the campaign, he repeatedly questioned the influence of large agricultural and pharmaceutical companies, arguing that elected officials have failed to investigate potential links between environmental factors and growing health problems.
“Iowa has the fastest-growing cancer rate in the world,” Lahn told supporters Tuesday night. “We all know something is terribly wrong. But too many politicians from Washington, D.C., to Des Moines have had their heads stuck in the sand while Big Ag and Big Pharma have printed money.”
The victory represents a significant win for the MAHA movement, which has increasingly sought to influence Republican primaries across the country. Lahn received support from MAHA Action and Turning Point Action, two organizations that mobilized activists and resources behind his campaign.
Prominent MAHA advocates openly campaigned against Feenstra. Turning Point USA personality Alex Clark blasted Trump’s endorsement of the congressman just days before the election, labeling him a “BAYER ENDORSED CANDIDATE” and urging supporters to back Lahn instead.
Turning Point Action President Erika Kirk celebrated the outcome shortly after the race was called.
“Congratulations to Zach Lahn on his victory! He will be a great Governor for all Iowans,” Kirk wrote. “Proud of our team @TPAction and the work ahead to deliver more MAGA and MAHA wins for the President.”
The upset is particularly notable given Iowa’s agricultural prominence. The state leads the nation in corn production and ranks second in soybean production, industries that have occasionally found themselves at odds with portions of the MAHA movement over issues such as pesticides, seed oils, and processed food ingredients.
Congratulations to Zach Lahn on his victory! He will be a great Governor for all Iowans.
Iowa is one of the most important states in the nation. Proud of our team @TPAction and the work ahead to deliver more MAGA and MAHA wins for the President. https://t.co/uHb2YMPeHa
— Erika Kirk (@MrsErikaKirk) June 3, 2026
Lahn has frequently spoken about those concerns. During a lengthy interview with Tucker Carlson earlier this year, he discussed topics ranging from cancer rates and agricultural chemicals to artificial intelligence and global economic trends. He specifically highlighted concerns about paraquat, a widely used herbicide that has been linked in some studies to an increased risk of Parkinson’s disease.
The primary victory now sets up a closely watched general election against Democratic Iowa Auditor Rob Sand, who ran unopposed for his party’s nomination. Despite Iowa’s recent Republican lean and Trump’s double-digit victory in the state in 2024, political analysts expect the governor’s race to remain highly competitive. Sand remains one of the few Democrats to win statewide office in Iowa in recent years, and the Cook Political Report currently rates the contest as a toss-up.
