Current term
State: IA. Party: Republican.
Term history
- U.S. Representative · IA · District 3 · Republican · 1975-01-14 – 1977-01-03
- U.S. Representative · IA · District 3 · Republican · 1977-01-04 – 1979-01-03
- U.S. Representative · IA · District 3 · Republican · 1979-01-15 – 1981-01-03
- U.S. Senator · IA · Republican · 1981-01-05 – 1987-01-03
- U.S. Senator · IA · Republican · 1987-01-06 – 1993-01-03
- U.S. Senator · IA · Republican · 1993-01-05 – 1999-01-03
- U.S. Senator · IA · Republican · 1999-01-06 – 2005-01-03
- U.S. Senator · IA · Republican · 2005-01-04 – 2011-01-03
- U.S. Senator · IA · Republican · 2011-01-05 – 2017-01-03
- U.S. Senator · IA · Republican · 2017-01-03 – 2023-01-03
- U.S. Senator · IA · Republican · 2023-01-03 – 2029-01-03