From statehood in 1912 to 1969,New Mexico did not use congressional districts for its representatives to theUnited States House of Representatives. Instead, it elected its representatives statewideat-large.

Years	Cong ress		Seat A				Seat B
			Member	Party	Electoral history		Member	Party	Electoral history
January 8, 1912 – March 3, 1913	62nd		Harvey Fergusson (Albuquerque)	Democratic	Elected in 1911 for the term starting upon 1912 statehood. Re-elected in 1912. Lost re-election.		George Curry (Tularosa)	Republican	Elected in 1911 for the term starting upon 1912 statehood. Retired.
March 3, 1913 – March 3, 1915	63rd						No second seat until 1943
March 4, 1915 – March 3, 1917	64th		Benigno C. Hernández (Tierra Amarilla)	Republican	Elected in 1914. Lost re-election.
March 4, 1917 – March 3, 1919	65th		William B. Walton (Silver City)	Democratic	Elected in 1916. Retired torun for U.S. senator.
March 4, 1919 – March 3, 1921	66th		Benigno C. Hernández (Tierra Amarilla)	Republican	Elected in 1918. Retired.
March 4, 1921 – January 13, 1923	67th		Néstor Montoya (Albuquerque)	Republican	Elected in 1920. Retired but died before term expired.
January 13, 1923 – March 3, 1923			Vacant
March 4, 1923 – March 3, 1929	68th 69th 70th		John Morrow (Raton)	Democratic	Elected in 1922. Re-elected in 1924. Re-elected in 1926. Lost re-election.
March 4, 1929 – March 3, 1931	71st		Albert G. Simms (Albuquerque)	Republican	Elected in 1928. Lost re-election.
March 4, 1931 – January 3, 1935	72nd 73rd		Dennis Chavez (Albuquerque)	Democratic	Elected in 1930. Re-elected in 1932. Retired torun for U.S. senator.
January 3, 1935 – January 3, 1941	74th 75th 76th		John J. Dempsey (Santa Fe)	Democratic	Elected in 1934. Re-elected in 1936. Re-elected in 1938. Retired torun for U.S. senator.
January 3, 1941 – January 3, 1943	77th		Clinton P. Anderson (Albuquerque)	Democratic	Elected in 1940. Re-elected in 1942. Re-elected in 1944. Resigned to becomeU.S. Secretary of Agriculture.
January 3, 1943 – June 30, 1945	78th 79th						Antonio M. Fernández (Santa Fe)	Democratic	Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Re-elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Died.
June 30, 1945 – January 3, 1947	79th		Vacant
January 3, 1947 – January 3, 1949	80th		Georgia Lee Lusk (Santa Fe)	Democratic	Elected in 1946. Lost renomination.
January 3, 1949 – January 3, 1951	81st		John E. Miles (Santa Fe)	Democratic	Elected in 1948. Retired.
January 3, 1951 – November 7, 1956	82nd 83rd 84th		John J. Dempsey (Santa Fe)	Democratic	Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Died.
November 7, 1956 – April 9, 1957	84th 85th						Vacant
April 9, 1957 – March 11, 1958	85th						Joseph Montoya (Santa Fe)	Democratic	Elected to finish Fernández's term. Re-elected in 1958. Re-elected in 1960. Re-elected in 1962. Retired torun for U.S. senator. Resigned when elected U.S. Senator.
March 12, 1958 – January 3, 1959			Vacant
January 3, 1959 – November 3, 1964	86th 87th 88th		Thomas G. Morris (Tucumcari)	Democratic	Elected in 1958. Re-elected in 1960. Re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Redistricted to the1st district and lost re-election.
November 3, 1964 – January 3, 1965	88th						Vacant
January 3, 1965 – January 3, 1969	89th 90th						E. S. Johnny Walker (Santa Fe)	Democratic	Elected in 1964. Re-elected in 1966. Redistricted to the2nd district and lost re-election.

Republicans held onto the seat in 1920 by nominatingNéstor Montoya, the county clerk ofBernalillo County and former Speaker of theNew Mexico Territorial Legislature. Montoya won with a combination of Hispanic voters and coat-tails from the election of PresidentWarren Harding. Republicans did not renominate him in 1922, choosing instead suffragistAdelina Otero-Warren, the niece of former territorialGovernor,Miguel Otero, and the first woman to run for statewide office in New Mexico. Otero-Warren was defeated by DemocratJohn Morrow, an educator and lawyer from northeast New Mexico. Morrow would win consecutive re-elections in 1924 and 1926, but lost re-election in 1928 toAlbert G. Simms, anAlbuquerque businessman, on the coat-tails of the election of PresidentHerbert Hoover.

• Martis, Kenneth C. (1989).The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982).The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–presentArchived April 23, 2010, at theWayback Machine

• Congressional districts of New Mexico
• At-large United States congressional districts
• Former congressional districts of the United States
• 1912 establishments in New Mexico
• Constituencies established in 1912
• 1969 disestablishments in New Mexico
• Constituencies disestablished in 1969

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