Member / Delegate Years Party District Electoral history March 4, 1875 –March 3, 1877 Democratic Elected in 1874. Retired. March 4, 1863 –March 3, 1871 Republican Elected in 1862. Retired to run for U. S. senator. March 4, 1887 –March 3, 1889 Independent Republican Elected in 1886. Lost re election to Flick. January 3, 2019 –January 3, 2023 Democratic Elected in 2018. Lost re election to Nunn. January 3, 1965 –January 3, 1967 Democratic Elected in 1964. Lost re election to Kyl. January 3, 1975 –January 3, 1987 Democratic Elected in 1974. Retired. March 4, 1933 –January 3, 1939 Democratic Elected in 1932. Lost re election to Talle. March 4, 1903 –March 3, 1909 Republican Elected in 1902. Retired. January 3, 1975 –January 3, 1979 Democratic Elected in 1974. Lost re election to Tauke. January 3, 2015 –January 3, 2019 Republican Elected in 2014. Lost re election to Finkenauer. March 4, 1919 –March 3, 1929 Republican Elected in 1918. Retired. January 3, 1997 –January 3, 2013 Democratic Elected in 1996. Lost re election to Latham. March 4, 1891 –March 3, 1893 Democratic Elected in 1890. Retired. January 3, 2007 –January 3, 2015 Democratic Elected in 2006. Retired to run for U. S. senator. January 3, 1961 –January 3, 1965 Republican Elected in 1960. Lost re election to Culver. March 4, 1877 –March 3, 1879 Republican Elected in 1876. Retired. March 4, 1891 –March 3, 1893 Democratic Elected in 1890. Lost re election to Updegraff. March 4, 1929 –March 3, 1933 Republican Elected in 1928. Redistricted to the and lost re election to G. Gillette. March 4, 1879 –March 3, 1883 Republican Elected in 1878. Retired. January 3, 1959 –November 4, 1959 Democratic Elected in 1958. Died. September 10, 1838 –October 27, 1840 Democratic Elected in 1838. Term expired per act of Congress. March 4, 1851 –March 3, 1853 Democratic Elected in 1850. Lost re election to J. P. Cook. March 4, 1877 –April 29, 1879 Republican Elected in 1876. Died. March 4, 1895 –March 3, 1899 Republican Elected in 1894. Retired. January 3, 1957 –January 3, 1963 Democratic Elected in 1956. Retired. August 1, 1921 –March 3, 1933 Republican Elected to finish Good's term. Redistricted to but retired. March 4, 1885 –October 3, 1890 Republican Elected in 1884. Resigned after being appointed U. S. Ambassador to Brazil. December 4, 1900 –March 3, 1909 Republican Elected in 1900. Lost renomination to Woods. March 4, 1913 –March 3, 1915 Democratic Elected in 1912. Retired to run for U. S. senator. March 3, 1883 –March 3, 1883 Democratic Won contested election. Lost re election to Cutts. October 9, 1883 –March 3, 1885 Elected to finish Cutts's term. Lost re election to Weaver. March 4, 1853 –March 3, 1855 Whig Elected in 1852. Retired. March 4, 1871 –March 3, 1875 Republican Elected in 1870. Lost renomination. March 4, 1893 –March 3, 1909 Republican Elected in 1892. Retired. January 3, 1965 –January 3, 1975 Democratic Elected in 1964. Retired to run for U. S. senator. March 4, 1877 –March 3, 1879 Republican Elected in 1876. Lost re election to E. Gillette. January 3, 1941 –January 3, 1943 Republican Elected in 1940. Redistricted to the January 3, 1943 –January 3, 1959 Redistricted from the and re elected in 1942. Lost re election to N. Smith. March 4, 1895 –March 3, 1899 Republican Elected in 1894. Retired. March 4, 1857 –August 4, 1861 Republican Elected in 1856. Resigned to serve in the Civil War. March 4, 1881 –March 3, 1883 Republican Elected in 1880. Lost contested election to Cook. March 4, 1883 –September 1, 1883 Elected in 1882. Died. March 4, 1857 –March 3, 1859 Republican Elected in 1856. Retired. March 4, 1905 –March 3, 1911 Republican Elected in 1904. Retired. March 4, 1877 –March 3, 1883 Republican Elected in 1876. Retired. March 4, 1919 –March 3, 1931 Republican Elected in 1918. Retired to run for U. S. senator. October 28, 1840 –December 28, 1846 Democratic Elected in 1840. Seat eliminated when statehood achieved. March 4, 1867 –March 3, 1869 Republican Elected in 1866. Retired. January 3, 1945 –January 3, 1957 Republican Elected in 1944. Lost re election to Coad. March 4, 1889 –August 22, 1900 Republican Elected in 1888. Resigned after being appointed to the U. S. Senate. March 4, 1871 –March 3, 1875 Republican Elected in 1870. Retired. March 4, 1915 –March 3, 1933 Republican Elected in 1914. Redistricted to the March 4, 1933 –January 3, 1935 Redistricted from the and re elected in 1932. Lost re election to Utterback. January 3, 1937 –February 4, 1940 Elected in 1936. Died. March 4, 1933 –December 2, 1938 Democratic Re elected in 1932. Renominated but resigned to become commissioner of the Securities and Exchange Commission. June 4, 1923 –March 3, 1925 Republican Elected to finish Towner's term. Retired. January 3, 1981 –January 3, 1987 Republican Elected in 1980. Retired. March 4, 1881 –March 3, 1883 Republican Elected in 1880. Lost re election to Murphy. Randy Feenstra January 3, 2021 –present Republican Elected in 2020. January 3, 2019 –January 3, 2021 Democratic Elected in 2018. Lost re election to Hinson. March 4, 1889 –March 3, 1893 Republican Elected in 1888. Retired. March 4, 1885 –March 3, 1887 Democratic Won contested election. Lost re election to Kerr. March 4, 1885 –March 3, 1889 Republican Elected in 1884. Lost renomination to Sweney. January 3, 1995 –January 3, 2003 Republican Elected in 1994. Redistricted to the but retired to run for U. S. senator. March 4, 1887 –March 3, 1891 Republican Elected in 1886. Lost re election to Seerley. March 4, 1893 –March 3, 1895 Elected in 1892. Retired to run for U. S. Senator. March 4, 1931 –March 3, 1933 Republican Elected in 1930. Redistricted to the March 4, 1933 –January 3, 1943 Redistricted from the and re elected in 1932. Redistricted to the January 3, 1943 –January 3, 1945 Redistricted from the and re elected in 1942. Lost renomination to J. I. Dolliver. March 4, 1879 –March 3, 1881 Greenback Elected in 1878. Lost re election to Kasson. March 4, 1933 –November 3, 1936 Democratic Elected in 1932. Retired to run for U. S. senator and resigned when elected. March 4, 1909 –June 15, 1921 Republican Elected in 1908. Resigned. March 5, 1940 –January 3, 1941 Republican Elected to finish Dowell's term. Retired. January 3, 1987 –January 3, 1993 Republican Elected in 1986. Redistricted to the January 3, 1993 –January 3, 1995 Redistricted from the and re elected in 1992. Retired to run for governor. January 3, 1975 –January 3, 1981 Republican Elected in 1974. Retired to run for U. S. senator. June 5, 1911 –March 31, 1928 Republican Elected to finish Smith's term. Resigned after being appointed a judge of the United States Court of Claims. January 3, 1965 –January 3, 1967 Democratic Elected in 1964. Lost re election to Mayne. March 4, 1863 –March 3, 1867 Republican Elected in 1862. Lost renomination to Loughridge. January 3, 1949 –January 3, 1975 Republican Elected in 1948. Retired. January 3, 1935 –January 3, 1949 Republican Elected in 1934. Lost renomination to Gross. March 4, 1893 –March 3, 1899 Republican Elected in 1892. Lost renomination to McPherson. March 4, 1855 –March 3, 1857 Democratic Elected in 1854. Lost re election to S. Curtis. March 4, 1885 –March 3, 1887 Democratic Elected in 1884. Lost re election to Gear. March 4, 1907 –March 3, 1909 Democratic Elected in 1906. Lost re election to Kendall. March 4, 1891 –March 3, 1893 Democratic Elected in 1890. Lost re election to Cousins. January 3, 1965 –January 3, 1967 Democratic Elected in 1964. Lost re election to Scherle. January 3, 1975 –January 3, 1985 Democratic Elected in 1974. Retired to run for U. S. senator. March 4, 1937 –September 5, 1942 Democratic Elected in 1936. Resigned to accept commission in the US Army. December 29, 1846 –March 3, 1847 Democratic Elected in 1846. Retired. March 4, 1899 –March 3, 1933 Republican Elected in 1898. Lost re election to Biermann. March 4, 1887 –March 3, 1895 Democratic Elected in 1886. Lost re election to G. Curtis. November 4, 1890 –March 3, 1891 Republican Elected to finish Conger's term. Retired. March 4, 1899 –March 3, 1907 Republican Elected in 1898. Retired. March 4, 1883 –March 3, 1903 Republican Elected in 1882. Renominated but withdrew prior to election. March 4, 1851 –March 3, 1855 Democratic Elected in 1850. Retired to run for U. S. senator. March 4, 1881 –March 3, 1887 Republican Elected in 1880. Lost re election to Anderson. March 4, 1893 –March 3, 1909 Elected in 1892. Lost re election to Jamieson. Ashley Hinson January 3, 2021 –January 3, 2023 Republican Elected in 2020. Redistricted to the January 3, 2023 –present Redistricted from the and re elected in 2022. January 3, 1943 –January 3, 1963 Republican Elected in 1942. Redistricted to the January 3, 1963 –January 3, 1965 Redistricted from the and re elected in 1962. Retired. March 4, 1883 –March 3, 1889 Republican Elected in 1882. Lost renomination to J. P. Dolliver. March 4, 1863 –March 3, 1869 Republican Elected in 1862. Retired. March 4, 1905 –June 4, 1912 Republican Elected in 1904. Died. March 4, 1915 –March 3, 1925 Republican Elected in 1914. Lost renomination to Letts. March 4, 1891 –March 3, 1911 Republican Elected in 1890. Lost renomination to Prouty. March 4, 1931 –June 30, 1936 Democratic Elected in 1930. Died. January 3, 1937 –January 3, 1943 Democratic Elected in 1936. Lost re election to Talle. March 4, 1909 –March 3, 1911 Democratic Elected in 1908. Retired. January 3, 1939 –January 3, 1965 Republican Elected in 1938. Lost re election to Hansen. March 4, 1863 –March 3, 1867 Republican Elected in 1862. Lost renomination to G. Dodge. March 4, 1873 –March 3, 1877 Elected in 1872. Retired. March 4, 1881 –July 31, 1884 Elected in 1880. Resigned after being appointed United States Ambassador to Germany. March 4, 1909 –March 3, 1913 Republican Elected in 1908. Renominated but withdrew prior to election. March 4, 1907 –March 3, 1921 Republican Elected in 1906. Retired. March 4, 1887 –March 3, 1891 Republican Elected in 1886. Retired. January 3, 2003 –January 3, 2013 Republican Elected in 2002. Redistricted to the January 3, 2013 –January 3, 2021 Redistricted from the and re elected in 2012. Lost renomination to Feenstra. March 4, 1913 –March 3, 1915 Democratic Elected in 1912. Lost renomination to Ramseyer. March 4, 1921 –March 3, 1933 Republican Elected in 1920. Lost re election to Eicher. December 15, 1959 –January 3, 1965 Republican Elected to finish Carter's term. Lost re election to Bandstra. January 3, 1967 –January 3, 1973 Elected in 1966. Lost re election to N. Smith. March 4, 1889 –March 3, 1891 Republican Elected in 1888. Lost re election to White. March 4, 1893 –March 3, 1907 Elected in 1892. Lost re election to D. Hamilton. March 4, 1899 –March 3, 1901 Republican Elected in 1898. Retired. January 3, 1995 –January 3, 2003 Republican Elected in 1994. Redistricted to the January 3, 2003 –January 3, 2013 Redistricted from the and re elected in 2002. Redistricted to the January 3, 2013 –January 3, 2015 Redistricted from the and re elected in 2012. Retired. January 3, 1977 –January 3, 2003 Republican Elected in 1976. Redistricted to the January 3, 2003 –January 3, 2007 Redistricted from the and re elected in 2002. Lost re election to Loebsack. January 3, 1939 –January 3, 1943 Republican Elected in 1938. Redistricted to the January 3, 1943 –January 3, 1959 Redistricted from the and re elected in 1942. Retired. December 28, 1846 –March 3, 1847 Democratic Elected in 1846. Redistricted to the March 4, 1847 –March 3, 1851 Redistricted from the and re elected in 1846. Retired. March 4, 1925 –March 3, 1931 Republican Elected in 1924. Lost re election to B. Jacobsen. January 3, 1985 –January 3, 1993 Republican Elected in 1984. Redistricted to the January 3, 1993 –January 3, 1997 Redistricted from the and re elected in 1992. Retired to run for U. S. senator. January 3, 2007 –January 3, 2021 Democratic Elected in 2006. Retired. March 4, 1867 –March 3, 1871 Republican Elected in 1866. Lost renomination to Walden. March 4, 1873 –March 3, 1875 Elected in 1872. Lost renomination to Sampson. March 4, 1885 –March 3, 1889 Republican Elected in 1884. Retired. January 3, 1939 –January 3, 1955 Republican Elected in 1938. Retired to run for U. S. Senator. January 3, 1967 –January 3, 1975 Republican Elected in 1966. Lost re election to Bedell. March 4, 1879 –March 3, 1885 Republican Elected in 1878. Lost renomination to John S. Woolson. March 4, 1869 –March 3, 1877 Republican Elected in 1868. Retired. March 4, 1873 –March 3, 1877 Republican Elected in 1872. Retired. March 4, 1899 –June 6, 1900 Republican Elected in 1898. Resigned when appointed judge for the US District Court for the Southern District of Iowa. January 3, 1973 –January 3, 1977 Democratic Elected in 1972. Lost re election to Leach. December 20, 1850 –March 3, 1851 Whig Elected to finish Thompson's term. Retired. January 3, 2021 –January 3, 2023 Republican Elected in 2020. Redistricted to the January 3, 2023 –present Redistricted from the and re elected in 2022. March 4, 1883 –March 3, 1887 Democratic Elected in 1882. Lost renomination to Hayes. January 3, 1987 –January 3, 1993 Democratic Elected in 1986. Redistricted to the and lost re election to Nussle. November 3, 1942 –January 3, 1943 Republican Elected to finish Woodbury's term. Retired. Zach Nunn January 3, 2023 –present Republican Elected in 2022. January 3, 1991 –January 3, 2003 Republican Elected in 1990. Redistricted to the January 3, 2003 –January 3, 2007 Redistricted from the and re elected in 2002. Retired to run for governor. March 4, 1875 –March 3, 1879 Republican Elected in 1874. Retired. March 4, 1871 –March 3, 1873 Republican Elected in 1870. Redistricted to the March 4, 1873 –March 3, 1875 Redistricted from the and re elected in 1872. Retired. March 4, 1869 –March 3, 1873 Republican Elected in 1868. Retired. March 4, 1911 –December 22, 1913 Democratic Elected in 1910. Died. March 4, 1891 –March 3, 1899 Republican Elected in 1890. Lost renomination to Thomas. March 4, 1909 –March 3, 1913 Republican Elected in 1908. Lost re election to Connolly. March 4, 1869 –March 3, 1871 Republican Elected in 1868. Lost renomination to Orr. March 4, 1873 –March 3, 1877 Republican Elected in 1872. Retired. March 4, 1863 –March 3, 1869 Republican Elected in 1862. Retired. March 4, 1877 –March 3, 1881 Elected in 1876. Retired. March 4, 1911 –March 3, 1915 Republican Elected in 1910. Retired. March 4, 1883 –March 3, 1885 Democratic Elected in 1882. Lost re election to Lyman. March 4, 1915 –March 3, 1933 Republican Elected in 1914. Redistricted to the and lost renomination to Thurston. March 4, 1889 –March 3, 1891 Republican Elected in 1888. Lost re election to Bowman. March 4, 1923 –March 3, 1933 Republican Elected in 1922. Lost re election to Willford. March 4, 1901 –January 31, 1903 Republican Elected in 1900. Retired and died before next term. March 4, 1875 –March 3, 1879 Republican Elected in 1874. Lost re election to Weaver. March 4, 1877 –March 3, 1881 Republican Elected in 1876. Lost renomination to Hepburn. January 3, 1967 –January 3, 1973 Republican Elected in 1966. Redistricted to the January 3, 1973 –January 3, 1975 Redistricted from the and re elected in 1972. Lost re election to Harkin. January 3, 1965 –January 3, 1967 Democratic Elected in 1964. Lost re election to Schwengel. January 3, 1955 –January 3, 1965 Republican Elected in 1954. Lost re election to Schmidhauser. January 3, 1967 –January 3, 1973 Elected in 1966. Lost re election to Mezvinsky. November 5, 1912 –March 3, 1915 Republican Elected to finish Hubbard's term. Lost re election to Steele. March 4, 1917 –March 3, 1919 Elected in 1916. Retired. March 4, 1891 –March 3, 1893 Democratic Elected in 1890. Lost re election to Gear. December 2, 1884 –March 3, 1885 Republican Elected to finish Kasson's term. Retired. January 3, 1959 –January 3, 1973 Democratic Elected in 1958. Redistricted to the January 3, 1973 –January 3, 1995 Redistricted from the and re elected in 1972. Lost re election to Ganske. December 3, 1900 –March 15, 1911 Republican Elected to finish McPherson's term. Resigned after being appointed judge of the United States Court of Appeals for the Eighth Circuit. March 4, 1869 –September 30, 1870 Republican Elected in 1868. Died. March 4, 1915 –March 3, 1917 Democratic Elected in 1914. Lost re election to Scott. March 4, 1877 –March 3, 1879 Republican Elected in 1876. Lost renomination to McCoid. March 4, 1883 –March 3, 1891 Republican Elected in 1882. Lost renomination to Perkins. March 4, 1929 –March 3, 1933 Republican Elected in 1928. Redistricted to the and lost re election to Wearin. March 4, 1915 –March 3, 1923 Republican Elected in 1914. Retired to run for U. S. senator. March 4, 1889 –March 3, 1891 Republican Elected in 1888. Lost re election to Butler. January 3, 1939 –January 3, 1943 Republican Elected in 1938. Redistricted to the January 3, 1943 –January 3, 1959 Redistricted from the and re elected in 1942. Lost re election to L. Wolf. January 3, 1979 –January 3, 1991 Republican Elected in 1978. Retired to run for U. S. senator. March 4, 1899 –March 3, 1905 Republican Elected in 1898. Lost renomination to E. Hubbard. March 4, 1847 –June 29, 1850 Democratic Elected in 1846. Seat declared vacant due to election challenge. December 1, 1879 –March 3, 1883 Republican Elected to finish R. Clark's term. Retired. March 4, 1855 –March 3, 1857 Whig Elected in 1854. Lost Republican nomination and retired. March 4, 1925 –March 3, 1933 Republican Elected in 1924. Redistricted to the March 4, 1933 –January 3, 1939 Redistricted from the and re elected in 1932. Retired to run for U. S. senator. March 4, 1911 –April 1, 1923 Republican Elected in 1910. Resigned to become Governor of Puerto Rico. March 4, 1875 –March 3, 1877 Republican Elected in 1874. Retired. March 4, 1879 –March 3, 1883 Republican Elected in 1878. Redistricted to the and lost re election to Weller. March 4, 1893 –March 3, 1899 Elected in 1892. Lost renomination to Haugen. January 3, 1935 –January 3, 1937 Democratic Elected in 1934. Retired to run for U. S. senator. March 4, 1859 –March 3, 1863 Republican Elected in 1858. Retired. June 4, 1928 –March 3, 1929 Republican Elected to finish Green's term. Lost renomination to Swanson. February 10, 1914 –March 3, 1915 Democratic Elected to finish Pepper's term. Retired. March 4, 1903 –March 3, 1905 Democratic Elected in 1902. Lost re election to Dawson. March 4, 1871 –March 3, 1873 Republican Elected in 1870. Lost renomination to Pratt. March 4, 1933 –January 3, 1939 Democratic Elected in 1932. Retired to run for U. S. senator. March 4, 1879 –March 3, 1881 Greenback Elected in 1878. Retired to run for president. March 4, 1885 –March 3, 1889 Elected in 1884. Lost re election to Lacey. March 4, 1883 –March 3, 1885 Greenback Elected in 1882. Lost re election to Fuller. March 4, 1891 –March 3, 1893 Democratic Elected in 1890. Lost re election to Lacey. March 4, 1933 –January 3, 1935 Democratic Elected in 1932. Lost re election to Gwynne. March 4, 1873 –March 3, 1877 Republican Elected in 1872. Retired. March 4, 1883 –March 3, 1885 Elected in 1882. Retired but lost contested election to Frederick before end of term. October 8, 1861 –March 3, 1869 Republican Elected to finish Curtis's term. Retired. January 3, 1959 –January 3, 1961 Democratic Elected in 1958. Lost re election to Bromwell. December 6, 1870 –March 3, 1871 Republican Elected to finish Smyth's term. Retired. March 4, 1909 –March 3, 1919 Republican Elected in 1908. Lost renomination to Dickinson. January 3, 2015 –January 3, 2019 Republican Elected in 2014. Lost re election to Axne.