With Iowa’s primary elections and state party conventions concluded, the political landscape shifts entirely to the November general election. To help you track key battlegrounds, our team has analyzed the latest June voter registration data. The accompanying chart highlights the most competitive races based on raw registration numbers and percentage margins. Over the past three months, narrowing registration gaps across the state signal an increasingly competitive cycle.
The raw data reveals several interesting dynamics in key districts:
- Iowa House: Out of the top 20 closest races as measured purely by voter registration totals, 13 involve incumbents and the top five districts each have less than a 500 voter registration difference. The closest (by a percentage of 2.17%) is District 73 where a Democrat incumbent (E. Wilson) serves in an area where Republicans enjoy a slim 277 voter registration advantage over Democrats. In another unique district, the Republican incumbent in
