Rising cancer rates and their potential links to agricultural pollution have emerged as a significant issue in Iowa’s midterm elections. Candidates for governor and the U.S. Senate from both parties are discussing environmental factors, including water contamination. The state currently reports the second-highest rate of new cancer cases in the country and is one of a few states where the rate is rising.
Iowa has historically been a major producer of corn and hogs. However, the concentration of nitrates from livestock manure and the use of herbicides have become subjects of political debate. Health officials also cite lifestyle factors such as obesity and smoking as contributors to the state's health trends.
In the gubernatorial race, Republican Zach Lahn, a farmer and businessman supported by the "Make America Healthy Again" (MAHA) movement, has campaigned on regulating chemicals and expanding wetlands. His Democratic opponent, state auditor Rob Sand, has also proposed wetlands expansion and criticized Lahn for supporting past budget cuts to research. In the Senate race, Republican Rep. Ashley Hinson and Democratic state Rep. Josh Turek have both called for increased funding for safe drinking water.
Campaign spending on this issue has increased. According to AdImpact, between $20 million and $30 million has been spent on ads mentioning cancer this cycle, compared to less than $200,000 in the 2022 midterms. Both parties are navigating internal divisions: some Republicans are split between pro-business interests and public health advocates, while some Democrats are accused by opponents of being hesitant to challenge agricultural interests.
The scale of the crisis has prompted a shift in political communication, with over 100 different campaign ads targeting this issue compared to just one in the previous midterm cycle. For individual households, policy outcomes could determine the safety of drinking water and the availability of early detection services, as highlighted by Rep. Hinson’s recent bipartisan bill to expand screening access.
Knock-on effects will likely reach the agricultural industry, as candidates like Chris Jones call for a move away from total dependence on corn and soybean production. This reflects a tension between economic reliance on the agricultural sector and public health demands. What happens next depends on the November 3 election results, which will determine if Iowa maintains its current legislative path or shifts toward different environmental oversight. Local officials will be monitoring voter turnout and the performance of candidates to gauge the long-term viability of these platforms.