John M. Coan
- 1948 – Illinois’ 6th congressional district (R) – lost
John R. Coan
- 1922 – Minnesota’s 5th congressional district (D) – lost
Arlon (Blackie) Coate
- 1982 – Mississippi’s 5th congressional district (D) – lost
- 1984 – Mississippi’s 5th congressional district (D) – lost
A. U. Coates
- 1936 – United States Senate (Iowa) (Special) (Proh.) – lost
Delos Frank Coates
- 2002 – California’s 22nd congressional district (L) – lost
Floyd Coates
- 1982 – Indiana’s 9th congressional district (R) – lost
- 1984 – Indiana’s 9th congressional district (R) – lost
- 1988 – Indiana’s 9th congressional district (R) – lost
- 1990 – Indiana’s 9th congressional district (R) – lost
Mary Jane Coates
- 1976 – Pennsylvania’s 15th congressional district (Labor) – lost
David Coatney
- 2022 – North Carolina’s 11th congressional district (L) – lost
Andy Coats
- 1980 – United States Senate (Oklahoma) (D) – lost
Daniel Ray Coats
- 1980 – Indiana’s 4th congressional district (R) – won
- 1982 – Indiana’s 4th congressional district (R) – won
- 1984 – Indiana’s 4th congressional district (R) – won
- 1986 – Indiana’s 4th congressional district (R) – won
- 1988 – Indiana’s 4th congressional district (R) – won
- 1990 – United States Senate (Indiana) (R) – won
- 1992 – United States Senate (Indiana) (R) – won
- 2010 – United States Senate (Indiana) (R) – won
Garry Wilbert Cobb
- 2014 – New Jersey’s 1st congressional district (Special) (R) – lost
- 2014 – New Jersey’s 1st congressional district (R) – lost
Joe Michael Cobb
- 2000 – California’s 48th congressional district (L) – lost
- 2002 – California’s 48th congressional district (L) – lost
- 2006 – Arizona’s 7th congressional district (L) – lost
- 2008 – Arizona’s 4th congressional district (L) – lost
- 2010 – Arizona’s 4th congressional district (L) – lost
- 2012 – Arizona’s 7th congressional district (L) – lost
- 2014 – Arizona’s 7th congressional district (L) – lost
Larry Cobb
- 1986 – Mississippi’s 1st congressional district (R) – lost
Paul R. Cobb
- 1976 – Florida’s 15th congressional district (R) – lost
Tedra Cobb
- 2018 – New York’s 21st congressional district (D, WF, WE) – lost
- 2020 – New York’s 21st congressional district (D, WF) – lost
Ty Cobb, Jr.
- 2008 – North Carolina’s 12th congressional district (R) – lost
Warren R. Cobean
- 1954 – New Mexico’s at large congressional district (R) – lost
William Wilfred Cobey, Jr.
- 1982 – North Carolina’s 4th congressional district (R) – lost
- 1984 – North Carolina’s 4th congressional district (R) – won
- 1986 – North Carolina’s 4th congressional district (R) – lost
John Cobin
- 2006 – South Carolina’s 4th congressional district (L) – lost
John Howard Coble
- 1984 – North Carolina’s 6th congressional district (R) – won
- 1986 – North Carolina’s 6th congressional district (R) – won
- 1988 – North Carolina’s 6th congressional district (R) – won
- 1990 – North Carolina’s 6th congressional district (R) – won
- 1992 – North Carolina’s 6th congressional district (R) – won
- 1994 – North Carolina’s 6th congressional district (R) – won
- 1996 – North Carolina’s 6th congressional district (R) – won
- 1998 – North Carolina’s 6th congressional district (R) – won
- 2000 – North Carolina’s 6th congressional district (R) – won
- 2002 – North Carolina’s 6th congressional district (R) – won
- 2004 – North Carolina’s 6th congressional district (R) – won
- 2006 – North Carolina’s 6th congressional district (R) – won
- 2008 – North Carolina’s 6th congressional district (R) – won
- 2010 – North Carolina’s 6th congressional district (R) – won
- 2012 – North Carolina’s 6th congressional district (R) – won
S. O. Coble
- 1924 – United States Senate (Kansas) (S) – lost
Marshall W. Cobleigh
- 1980 – New Hampshire’s 1st congressional district (R) – lost
John G. Cobler
- 1922 – Pennsylvania’s 26th congressional district (D) – lost
- 1924 – Pennsylvania’s 26th congressional district (D, Proh.) – lost
Thomas Allen Coburn
- 1994 – Oklahoma’s 2nd congressional district (R) – won
- 1996 – Oklahoma’s 2nd congressional district (R) – won
- 1998 – Oklahoma’s 2nd congressional district (R) – won
- 2004 – United States Senate (Oklahoma) (R) – won
- 2010 – United States Senate (Oklahoma) (R) – won
Angie G. Cochran
- 2004 – Nevada’s 2nd congressional district (D) – lost
Deborah R. Cochran
- 1982 – Massachusetts’ 9th congressional district (R) – lost
Donald Cochran
- 1994 – California’s 44th congressional district (AI) – lost
- 1996 – California’s 44th congressional district (AI) – lost
Fannie F. Cochran
- 1920 – New York’s 35th congressional district (Proh.) – lost
Gregory Cochran
- 1990 – Tennessee’s 6th congressional district (R) – lost
John C. Cochran
- 2022 – Alabama’s 4th congressional district (L) – lost
John Joseph Cochran
- 1926 – Missouri’s 11th congressional district (Special) (D) – won
- 1926 – Missouri’s 11th congressional district (D) – won
- 1928 – Missouri’s 11th congressional district (D) – won
- 1930 – Missouri’s 11th congressional district (D) – won
- 1932 – Missouri’s at large congressional district (D) – won
- 1934 – Missouri’s 13th congressional district (D) – won
- 1936 – Missouri’s 13th congressional district (D) – won
- 1938 – Missouri’s 13th congressional district (D) – won
- 1940 – Missouri’s 13th congressional district (D) – won
- 1942 – Missouri’s 13th congressional district (D) – won
- 1944 – Missouri’s 13th congressional district (D) – won
R. B. Cochran
- 1930 – United States Senate (New Mexico) (S) – lost
R. L. Cochran
- 1940 – United States Senate (Nebraska) (D) – lost
Thomas Cunningham Cochran
- 1926 – Pennsylvania’s 28th congressional district (R, D, S, Proh.) – won
- 1928 – Pennsylvania’s 28th congressional district (R, Proh., S) – won
- 1930 – Pennsylvania’s 28th congressional district (R) – won
- 1932 – Pennsylvania’s 20th congressional district (R, Proh., Nonpartisan, S) – won
William D. Cochran
- 1952 – Kentucky’s 5th congressional district (R) – lost
William Thad Cochran
- 1972 – Mississippi’s 4th congressional district (R) – won
- 1974 – Mississippi’s 4th congressional district (R) – won
- 1976 – Mississippi’s 4th congressional district (R) – won
- 1978 – United States Senate (Mississippi) (R) – won
- 1984 – United States Senate (Mississippi) (R) – won
- 1990 – United States Senate (Mississippi) (R) – won
- 1996 – United States Senate (Mississippi) (R) – won
- 2002 – United States Senate (Mississippi) (R) – won
- 2008 – United States Senate (Mississippi) (R) – won
- 2014 – United States Senate (Mississippi) (R) – won
Timothy J. Cochrane
- 2008 – New York’s 13th congressional district (CON) – lost
Leslie Cockburn
- 2018 – Virginia’s 5th congressional district (D) – lost
Richard K. Cockey
- 1970 – Hawaii’s 1st congressional district (R) – lost
William Bourke Cockran
- 1920 – New York’s 16th congressional district (D) – won
- 1922 – New York’s 16th congressional district (D) – won
Claude Cockrell
- 1968 – Tennessee’s 9th congressional district (I) – lost
George Pierre Codd
- 1920 – Michigan’s 1st congressional district (R) – won
Mary T. Codd
- 1980 – New York’s 17th congressional district (L) – lost
William Coddington
- 1920 – Michigan’s 9th congressional district (SL) – lost
Kenneth J. Cody
- 2010 – New Jersey’s 12th congressional district (Truth Vision Hope) – lost
- 2012 – New Jersey’s 12th congressional district (Truth Vision Hope) – lost
- 2014 – New Jersey’s 12th congressional district (Truth Vision Hope) – lost
- 2020 – New Jersey’s 12th congressional district (I) – lost
Wacey Alpha Cody
- 2020 – Texas’ 11th congressional district (L) – lost
Bruce G. Coe
- 1978 – New Jersey’s 3rd congressional district (R) – lost
Charles E. Coe
- 1978 – Virginia’s 8th congressional district (I) – lost
Earl S. Coe
- 1946 – Washington’s 4th congressional district (D) – lost
Anthony Lee Coelho
- 1978 – California’s 15th congressional district (D) – won
- 1980 – California’s 15th congressional district (D) – won
- 1982 – California’s 15th congressional district (D) – won
- 1984 – California’s 15th congressional district (D) – won
- 1986 – California’s 15th congressional district (D) – won
- 1988 – California’s 15th congressional district (D) – won
