David R. McCormack
- 1970 – Michigan’s 4th congressional district (D) – lost
Frank M. McCormack
- 1940 – New York’s 32nd congressional district (D) – lost
John William McCormack
- 1928 – Massachusetts’ 12th congressional district (D) – won
- 1930 – Massachusetts’ 12th congressional district (D) – won
- 1932 – Massachusetts’ 12th congressional district (D) – won
- 1934 – Massachusetts’ 12th congressional district (D) – won
- 1936 – Massachusetts’ 12th congressional district (D) – won
- 1938 – Massachusetts’ 12th congressional district (D) – won
- 1940 – Massachusetts’ 12th congressional district (D) – won
- 1942 – Massachusetts’ 12th congressional district (D) – won
- 1944 – Massachusetts’ 12th congressional district (D) – won
- 1946 – Massachusetts’ 12th congressional district (D) – won
- 1948 – Massachusetts’ 12th congressional district (D) – won
- 1950 – Massachusetts’ 12th congressional district (D) – won
- 1952 – Massachusetts’ 12th congressional district (D) – won
- 1954 – Massachusetts’ 12th congressional district (D) – won
- 1956 – Massachusetts’ 12th congressional district (D) – won
- 1958 – Massachusetts’ 12th congressional district (D) – won
- 1960 – Massachusetts’ 12th congressional district (D) – won
- 1962 – Massachusetts’ 9th congressional district (D) – won
- 1964 – Massachusetts’ 9th congressional district (D) – won
- 1966 – Massachusetts’ 9th congressional district (D) – won
- 1968 – Massachusetts’ 9th congressional district (D) – won
Richard E. McCormack
- 1956 – Massachusetts’ 13th congressional district (D) – lost
Richard McCormack
- 1978 – New Jersey’s 12th congressional district (D) – lost
Darrell L. McCormick
- 2000 – United States Senate (Florida) (I) – lost
Edward J. McCormick
- 1950 – New York’s 16th congressional district (R) – lost
Edward J. McCormick III
- 1992 – Massachusetts’ 4th congressional district (R) – lost
Harold L. McCormick
- 1978 – Colorado’s 3rd congressional district (R) – lost
- 1980 – Colorado’s 3rd congressional district (R) – lost
James F. McCormick
- 1922 – Pennsylvania’s 7th congressional district (Single Tax) – lost
Joseph Francis McCormick, Jr.
- 1998 – Georgia’s 2nd congressional district (R) – lost
Karen McCormick
- 2018 – Colorado’s 4th congressional district (D) – lost
Kevin McCormick
- 2016 – Texas’ 24th congressional district (G) – lost
La Rue McCormick
- 1938 – California’s 16th congressional district (Comm.) – lost
Leo W. McCormick
- 1964 – Pennsylvania’s 15th congressional district (R) – lost
Michael McCormick
- 1978 – Arizona’s 4th congressional district (D) – lost
Mike McCormick
- 1994 – Pennsylvania’s 20th congressional district (R) – lost
- 1996 – Pennsylvania’s 20th congressional district (R) – lost
P. C. McCormick
- 1922 – New Jersey’s 1st congressional district (S) – lost
Ray McCormick
- 2022 – Indiana’s 8th congressional district (D) – lost
Richard Dean McCormick
- 2020 – Georgia’s 7th congressional district (R) – lost
- 2022 – Georgia’s 6th congressional district (R) – won
Ruth Hanna McCormick-Simms
- 1928 – Illinois’ at large congressional district (R) – won
- 1930 – United States Senate (Illinois) (R) – lost
Tom McCormick
- 2018 – Connecticut’s 1st congressional district (G) – lost
- 2020 – Connecticut’s 1st congressional district (G) – lost
Washington Jay McCormick
- 1920 – Montana’s 1st congressional district (R) – won
- 1922 – Montana’s 1st congressional district (R) – lost
Faber V. McCoskey
- 1922 – Pennsylvania’s 20th congressional district (Labor) – lost
Thaddeus George McCotter
- 2002 – Michigan’s 11th congressional district (R) – won
- 2004 – Michigan’s 11th congressional district (R) – won
- 2006 – Michigan’s 11th congressional district (R) – won
- 2008 – Michigan’s 11th congressional district (R) – won
- 2010 – Michigan’s 11th congressional district (R) – won
Edward Oscar McCowen
- 1942 – Ohio’s 6th congressional district (R) – won
- 1944 – Ohio’s 6th congressional district (R) – won
- 1946 – Ohio’s 6th congressional district (R) – won
- 1948 – Ohio’s 6th congressional district (R) – lost
- 1950 – Ohio’s 6th congressional district (R) – lost
H. A. McCown
- 1946 – Ohio’s 10th congressional district (D) – lost
Timothy D. McCown
- 1998 – Maryland’s 6th congressional district (D) – lost
- 2000 – Maryland’s 6th congressional district (G) – lost
McCoy
- 1934 – Missouri’s 10th congressional district (S) – lost
Al McCoy
- 1944 – Washington’s 4th congressional district (D) – lost
- 1956 – Washington’s 3rd congressional district (D) – lost
Carol Ann McCoy
- 2000 – Ohio’s 17th congressional district (NL) – lost
Frank J. McCoy
- 1934 – New York’s 15th congressional district (R) – lost
Ira D. McCoy
- 1952 – Michigan’s 7th congressional district (D) – lost
- 1954 – Michigan’s 7th congressional district (D) – lost
- 1956 – Michigan’s 7th congressional district (D) – lost
Jack E. McCoy
- 1989 – California’ 15th congressional district (Special) (R) – lost
Jack McCoy
- 1974 – United States Senate (California) (AI) – lost
- 1976 – United States Senate (California) (AI) – lost
John McCoy
- 1928 – Nebraska’s 6th congressional district (D) – lost
- 1930 – Nebraska’s 6th congressional district (D) – lost
Patrick J. McCoy
- 1984 – California’s 32nd congressional district (PF) – lost
Ralph R. McCoy
- 1976 – Ohio’s 18th congressional district (R) – lost
Homer McCracken
- 1966 – Missouri’s 3rd congressional district (R) – lost
- 1968 – Missouri’s 3rd congressional district (R) – lost
Mark B. McCracken
- 2008 – Pennsylvania’s 5th congressional district (D) – lost
Patricia C. McCracken
- 2016 – Georgia’s 12th congressional district (D) – lost
H. R. McCrary
- 1944 – Michigan’s 15th congressional district (S) – lost
E. L. McCravey
- 1938 – Georgia’s 9th congressional district (I) – lost
A. B. McCraw
- 1936 – South Carolina’s 2nd congressional district (I) – lost
- 1936 – South Carolina’s 5th congressional district (I) – lost
- 1938 – South Carolina’s 5th congressional district (R) – lost
Herman L. McCray
- 1950 – Indiana’s 8th congressional district (R) – lost
J. William McCray
- 1958 – Ohio’s 13th congressional district (D) – lost
- 1960 – Ohio’s 13th congressional district (D) – lost
Joseph McCray, Sr.
- 2012 – California’s 6th congressional district (R) – lost
- 2014 – California’s 6th congressional district (R) – lost
Daniel Kent McCready
- 2018 – North Carolina’s 9th congressional district (D) – disputed
- 2019 – North Carolina’s 9th congressional district (Special) (D) – lost
Jerome McCready
- 1992 – United States Senate (California) (AI) – lost
- 1993 – California’ 17th congressional district (Special) (AI) – lost
James Otis McCrery III
- 1988 – Louisiana’s 4th congressional district (R) – won
- 1990 – Louisiana’s 4th congressional district (R) – won
- 1992 – Louisiana’s 5th congressional district (R) – won
- 1994 – Louisiana’s 5th congressional district (R) – won
- 1996 – Louisiana’s 4th congressional district (R) – won
- 1998 – Louisiana’s 4th congressional district (R) – won
- 2000 – Louisiana’s 4th congressional district (R) – won
- 2002 – Louisiana’s 4th congressional district (R) – won
- 2004 – Louisiana’s 4th congressional district (R) – won
- 2006 – Louisiana’s 4th congressional district (R) – won
