Daniel L. McDonough
- 1938 – New York’s 15th congressional district (American Labor) – lost
Donna C. McDonough
- 1976 – Connecticut’s 1st congressional district (Labor) – lost
- 1978 – Connecticut’s 1st congressional district (Labor) – lost
Gordon Leo McDonough
- 1944 – California’s 15th congressional district (R) – won
- 1946 – California’s 15th congressional district (R, D) – won
- 1948 – California’s 15th congressional district (R, D) – won
- 1950 – California’s 15th congressional district (R, D) – won
- 1952 – California’s 15th congressional district (R, D) – won
- 1954 – California’s 15th congressional district (R) – won
- 1956 – California’s 15th congressional district (R) – won
- 1958 – California’s 15th congressional district (R) – won
- 1960 – California’s 15th congressional district (R) – won
- 1962 – California’s 30th congressional district (R) – lost
Howard McDonough
- 1928 – Pennsylvania’s 14th congressional district (SL) – lost
John B. McDonough
- 1920 – Pennsylvania’s at large congressional district (D) – lost
John E. McDonough
- 1934 – Pennsylvania’s 8th congressional district (D) – lost
John J. McDonough
- 1934 – Minnesota’s 4th congressional district (D) – lost
John McDonough
- 1974 – Missouri’s 5th congressional district (R) – lost
John V. McDonough
- 1938 – Tennessee’s 6th congressional district (I) – lost
Patrick L. McDonough
- 1996 – Maryland’s 3rd congressional district (R) – lost
- 2016 – Maryland’s 2nd congressional district (R) – lost
Patrick W. McDonough
- 1946 – California’s 7th congressional district (D) – lost
Thomas E. McDonough
- 1978 – New Jersey’s 14th congressional district (I) – lost
William M. McDonough
- 1922 – Mississippi’s 2nd congressional district (R) – lost
- 1932 – Mississippi’s 2nd congressional district (R) (Lilly White) – lost
- 1936 – Mississippi’s 2nd congressional district (R) – lost
- 1944 – Mississippi’s 2nd congressional district (R) – lost
Jim McDougal
- 1982 – Arkansas’ 3rd congressional district (D) – lost
Robert B. McDougle
- 1934 – West Virginia’s 4th congressional district (R) – lost
Joe McDow
- 1956 – Georgia’s 5th congressional district (I) – lost
Arthur McDowell
- 1934 – Illinois’ at large congressional district (S) – lost
- 1936 – United States Senate (Illinois) (I) – lost
Eddie McDowell
- 1986 – Georgia’s 8th congressional district (R) – lost
Gary J. McDowell
- 2010 – Michigan’s 1st congressional district (D) – lost
- 2012 – Michigan’s 1st congressional district (D) – lost
Harris Brown McDowell, Jr.
- 1954 – Delaware’s at large congressional district (D) – won
- 1956 – Delaware’s at large congressional district (D) – lost
- 1958 – Delaware’s at large congressional district (D) – won
- 1960 – Delaware’s at large congressional district (D) – won
- 1962 – Delaware’s at large congressional district (D) – won
- 1964 – Delaware’s at large congressional district (D) – won
- 1966 – Delaware’s at large congressional district (D) – lost
- 1968 – Delaware’s at large congressional district (D) – lost
Jan McDowell
- 2016 – Texas’ 24th congressional district (D) – lost
- 2018 – Texas’ 24th congressional district (D) – lost
- 2022 – Texas’ 24th congressional district (D) – lost
John Ralph McDowell
- 1938 – Pennsylvania’s 31st congressional district (R, Royal Oak, Nonpartisan) – won
- 1940 – Pennsylvania’s 31st congressional district (R) – lost
- 1942 – Pennsylvania’s 30th congressional district (R) – lost
- 1946 – Pennsylvania’s 29th congressional district (R) – won
- 1948 – Pennsylvania’s 29th congressional district (R) – lost
John McDuffie
- 1920 – Alabama’s 1st congressional district (D) – won
- 1922 – Alabama’s 1st congressional district (D) – won
- 1924 – Alabama’s 1st congressional district (D) – won
- 1926 – Alabama’s 1st congressional district (D) – won
- 1928 – Alabama’s 1st congressional district (D) – won
- 1930 – Alabama’s 1st congressional district (D) – won
- 1932 – Alabama’s 1st congressional district (D) – won
- 1934 – Alabama’s 1st congressional district (D) – won
Aston Donald McEachin
- 2016 – Virginia’s 4th congressional district (D) – won
- 2018 – Virginia’s 4th congressional district (D) – won
- 2020 – Virginia’s 4th congressional district (D) – won
- 2022 – Virginia’s 4th congressional district (D) – won
Malcolm McEachin
- 1946 – Nevada’s at large congressional district (D) – lost
John McElderry
- 1980 – Colorado’s 2nd congressional district (R) – lost
Robert McEldowney
- 1932 – Pennsylvania’s 27th congressional district (Liberal) – lost
Bud McElhaney
- 1986 – North Carolina’s 2nd congressional district (R) – lost
John McElligott
- 2018 – Texas’ 22nd congressional district (L) – lost
Homer R. McElroy
- 1950 – Illinois’ 14th congressional district (D) – lost
Mac McElroy
- 1996 – United States Senate (Kentucky) (T) – lost
Morgan J. McEnaney
- 1940 – Iowa’s 4th congressional district (D) – lost
William Hugh McEniry
- 1934 – Alabama’s 9th congressional district (R) – lost
Robert D. McEwan
- 1980 – Ohio’s 6th congressional district (R) – won
- 1982 – Ohio’s 6th congressional district (R) – won
- 1984 – Ohio’s 6th congressional district (R) – won
- 1986 – Ohio’s 6th congressional district (R) – won
- 1988 – Ohio’s 6th congressional district (R) – won
- 1990 – Ohio’s 6th congressional district (R) – won
- 1992 – Ohio’s 6th congressional district (R) – lost
Stephen J. McEwen, Jr.
- 1974 – Pennsylvania’s 7th congressional district (R) – lost
James M. McEwen
- 1960 – Florida’s 1st congressional district (D) – lost
John Leroy McEwen
- 1990 – Wisconsin’s 7th congressional district (R) – lost
Robert Cameron McEwen
- 1964 – New York’s 31st congressional district (R, CON) – won
- 1966 – New York’s 31st congressional district (R) – won
- 1968 – New York’s 31st congressional district (R, CON) – won
- 1970 – New York’s 31st congressional district (R, CON) – won
- 1972 – New York’s 30th congressional district (R, CON) – won
- 1974 – New York’s 30th congressional district (R, CON) – won
- 1976 – New York’s 30th congressional district (R, CON) – won
- 1978 – New York’s 30th congressional district (R, CON) – won
Hugh B. McFadden, Jr.
- 1984 – Wyoming’s at large congressional district (D) – lost
Louis Thomas McFadden
- 1920 – Pennsylvania’s 14th congressional district (R) – won
- 1922 – Pennsylvania’s 15th congressional district (R) – won
- 1924 – Pennsylvania’s 15th congressional district (R) – won
- 1926 – Pennsylvania’s 15th congressional district (R, Proh.) – won
- 1928 – Pennsylvania’s 15th congressional district (R, D) – won
- 1930 – Pennsylvania’s 15th congressional district (R, Proh.) – won
- 1932 – Pennsylvania’s 15th congressional district (R, D, Proh.) – won
- 1934 – Pennsylvania’s 15th congressional district (R, Proh.) – lost
Mike McFadden
- 2014 – United States Senate (Minnesota) (R) – lost
Ralph G. McFadden
- 1966 – Indiana’s 2nd congressional district (D) – lost
Jerald Steve McFall
- 2018 – New Mexico’s 3rd congressional district (R) – lost
John Joseph McFall
- 1956 – California’s 11th congressional district (D) – won
- 1958 – California’s 11th congressional district (D) – won
- 1960 – California’s 11th congressional district (D) – won
- 1962 – California’s 15th congressional district (D) – won
- 1964 – California’s 15th congressional district (D) – won
- 1966 – California’s 15th congressional district (D)
- 1968 – California’s 15th congressional district (D) – won
- 1970 – California’s 15th congressional district (D) – won
- 1972 – California’s 15th congressional district (D) – won
- 1974 – California’s 14th congressional district (D) – won
- 1976 – California’s 14th congressional district (D) – won
- 1978 – California’s 14th congressional district (D) – lost
W. H. McFall
- 1920 – Missouri’s 15th congressional district (S) – lost
H. J. McFarlan
- 1934 – Michigan’s 2nd congressional district (S) – lost
Bill McFarland
- 1986 – Alabama’s 7th congressional district (R) – lost
Deb McFarland
- 2008 – Arkansas’ 2nd congressional district (G) – lost
Elden McFarland
- 1986 – California’s 1st congressional district (PF) – lost
Ernest William McFarland
- 1940 – United States Senate (Arizona) (D) – won
- 1946 – United States Senate (Arizona) (D) – won
- 1952 – United States Senate (Arizona) (D) – lost
- 1958 – United States Senate (Arizona) (D) – lost