Nunn, Trone Garriott, and Battaglia are running in Iowa's 3rd District, decided by fewer than four points in each of the last two elections
Republican incumbent Zach Nunn faces Democratic challenger Sarah Trone Garriott and Libertarian Marco Battaglia in Iowa's 3rd Congressional District race on November 3, 2026. The seat has been highly competitive, with victories decided by fewer than four points in each of the last two elections and no incumbent serving more than two consecutive terms since 2010.
Key Points
- Iowa's 3rd District is a highly competitive swing seat with razor-thin margins in recent elections
- Incumbent Republican Zach Nunn defeated Democrat Cindy Axne in the previous cycle
- The district shows a pattern of frequent turnover, with no incumbent holding the seat for more than two terms since 2010