IncumbentMike Bousselot Republican
General election
- Heather Matson Democrat
member of the Iowa House of Representatives from the 42nd district (2023–present)
- John Hollinrake Republican
real estate developer
District 21 Democratic primaryUnofficial results
member of the Iowa House of Representatives from the 42nd district (2023–present)
District 21 Republican primaryUnofficial results
real estate developer