Iowa Republican gubernatorial candidate Zach Lahn stood alongside U.S. Health and Human Services Secretary Robert F. Kennedy Jr. this week, using a Make America Healthy Again rally to hammer his opposition to the COVID-19 vaccine and to cast water quality and cancer rates as his top priorities heading into next week's election. The event came as Lahn works to energize the same MAHA-aligned base that helped fuel his primary victory, with just days left before Iowans decide the race against Democratic nominee Rob Sand.
According to The Des Moines Register, the rally drew more than 1,000 people, a figure organizers provided. Reports differ on exactly where the event took place: Radio Iowa placed it at the Horizon Events Center in Clive, while the Washington Examiner described the gathering as taking place in Des Moines. Lahn told the crowd his top priority as governor would be to “clean up our water and to stop the cancer crisis in the state of Iowa,” according to the Iowa Capital Dispatch.
Vaccine Pledges Take Center Stage
Lahn has pledged to ban the COVID-19 vaccine if elected and has said he would scale back vaccine requirements for children to attend school, the Iowa Capital Dispatch reports. During a primary-season debate, he said he would ban mRNA vaccines in Iowa altogether, a statement he later clarified was specifically about the COVID-19 vaccine. He has also said he would support Iowans' ability to access mRNA therapies developed to treat cancer, genetic disorders and infectious diseases, per the same outlet's reporting.
Kennedy, notably, steered clear of vaccine talk at the rally. The HHS secretary instead focused his remarks on water quality, according to the Iowa Capital Dispatch, effectively endorsing Lahn's environmental and food-safety priorities without wading into the vaccine debate that has defined much of Lahn's campaign. Kennedy appeared at the event in his personal capacity rather than as a Trump administration official, the Washington Examiner reported.
National Players Descend on the Race
Kennedy appeared at the rally, which was hosted by the Make America Healthy Again PAC, and described Iowa's gubernatorial contest as a national priority, telling the crowd, “This to me is the most important election going on in this country today,” according to CBS 2 Iowa. Lahn was the first candidate the PAC endorsed during the 2026 election cycle, the station notes.
Other attendees underscored the national stakes MAHA organizers are placing on the race. Florida Surgeon General Joe Ladapo, Iowa Attorney General Brenna Bird and Iowa House candidate Joe Mitchell all joined Lahn at the rally, the Washington Examiner reported. Kennedy's visit to Iowa follows a broader midterm push; Politico described his recent travels as an effort to boost vulnerable Republican candidates ahead of the elections, and he also campaigned with Michigan Senate candidate Mike Rogers and gubernatorial candidate John James in Grand Rapids, according to C-SPAN.
Polls Show Sand With an Edge
Despite the star power, Lahn enters the final stretch behind in the polls. An average of October surveys showed Sand ahead by 6.2 percentage points as of this week, the Washington Examiner reported. A CNN poll released earlier in October found Sand leading by 9 points among likely Iowa voters, in a survey of 801 likely voters with a margin of sampling error of plus or minus 4.2 percentage points. The nonpartisan Cook Political Report has rated the race as leaning Democratic, with polling increasingly favoring Sand, according to The 19th.
Money has flowed into the race from national MAHA-aligned groups, though reports vary on the total. Politico reported MAHA groups announced plans to spend nearly $2 million to help elect candidates including Lahn and Mitchell, while The Hill put the figure at more than $2 million across the same two races. Separately, The 19th reported that MAHA Action donated $1 million to Lahn's campaign this fall, while CNN reported the figure as $1.5 million.
Cancer and Water Quality Reshape the Campaign
The emphasis on cancer and environmental health reflects a broader shift in Iowa's 2026 race. CNN reported that, for the first time, tackling the environmental causes of cancer has been included in campaign platforms for both parties this cycle. Cleaning up Iowa's water, growing food for human consumption and prohibiting vaccine mandates were major themes of the rally, according to Radio Iowa.
Even with the partisan sparring, the two gubernatorial rivals share some common ground. Both Lahn and Sand say they want better water monitoring and support for local Iowa farmers, The 19th reported. The vaccine debate has also found traction elsewhere in state politics; Iowa state Rep. Bill Gustoff has said he joined the “medical freedom movement” after his child had an adverse reaction to the MMR vaccine, according to the Iowa Capital Dispatch.
Lahn secured the Republican nomination on June 2 and chose state Representative Derek Wulf as his running mate, according to Iowa PBS. With Election Day arriving Nov. 3, the MAHA-aligned rally marks one of the final high-profile pushes of a campaign that has turned water quality, cancer and vaccine policy into defining issues for Iowa voters.
