Woodrow Ingram
- 1940 – Michigan’s 15th congressional district (S) – lost
- 1948 – Michigan’s 11th congressional district (S) – lost
James Mountain Inhofe
- 1976 – Oklahoma’s 1st congressional district (R) – lost
- 1986 – Oklahoma’s 1st congressional district (R) – won
- 1988 – Oklahoma’s 1st congressional district (R) – won
- 1990 – Oklahoma’s 1st congressional district (R) – won
- 1992 – Oklahoma’s 1st congressional district (R) – won
- 1994 – United States Senate (Oklahoma) (Special) (R) – won
- 1996 – United States Senate (Oklahoma) (R) – won
- 2002 – United States Senate (Oklahoma) (R) – won
- 2008 – United States Senate (Oklahoma) (R) – won
- 2014 – United States Senate (Oklahoma) (R) – won
- 2020 – United States Senate (Oklahoma) (R) – won
Ronald W. Inkley
- 1974 – Utah’s 1st congressional district (R) – lost
J. M. Inman
- 1930 – California’s 3rd congressional district (R) – lost
- 1934 – California’s 3rd congressional district (R, Prog.) – lost
Philip H. Inman
- 2006 – California’s 40th congressional district (L) – lost
Terry Inman
- 1988 – Missouri’s 1st congressional district (L) – lost
Joseph Innella
- 1996 – South Carolina’s 1st congressional district (NL) – lost
- 1998 – South Carolina’s 1st congressional district (NL) – lost
- 2002 – South Carolina’s 1st congressional district (NL) – lost
John F. Innelli
- 1990 – Pennsylvania’s 7th congressional district (D) – lost
- 1996 – Pennsylvania’s 7th congressional district (D) – lost
John P. Innerarity
- 1934 – Pennsylvania’s 6th congressional district (S) – lost
Ralph B. Innis
- 1942 – Missouri’s 5th congressional district (R) – lost
- 1944 – Missouri’s 5th congressional district (R) – lost
Daniel Ken Inouye
- 1960 – Hawaii’s at large congressional district (D) – won
- 1962 – United States Senate (Hawaii) (D) – won
- 1968 – United States Senate (Hawaii) (D) – won
- 1974 – United States Senate (Hawaii) (D) – won
- 1980 – United States Senate (Hawaii) (D) – won
- 1986 – United States Senate (Hawaii) (D) – won
- 1992 – United States Senate (Hawaii) (D) – won
- 1998 – United States Senate (Hawaii) (D) – won
- 2004 – United States Senate (Hawaii) (D) – won
- 2010 – United States Senate (Hawaii) (D) – won
Hank Inouye
- 1976 – Hawaii’s 2nd congressional district (R) – lost
Philip Insabella
- 1954 – New Jersey’s 11th congressional district (R) – lost
Jack P. Insco
- 1972 – Florida’s 5th congressional district (R) – lost
Jay Robert Inslee
- 1992 – Washington’s 4th congressional district (D) – won
- 1994 – Washington’s 4th congressional district (D) – lost
- 1998 – Washington’s 1st congressional district (D) – won
- 2000 – Washington’s 1st congressional district (D) – won
- 2002 – Washington’s 1st congressional district (D) – won
- 2004 – Washington’s 1st congressional district (D) – won
- 2006 – Washington’s 1st congressional district (D) – won
- 2008 – Washington’s 1st congressional district (D) – won
- 2010 – Washington’s 1st congressional district (D) – won
Joseph Intaliata
- 1950 – Missouri’s 12th congressional district (Christian Nationalist) – lost
Nicholas S. Di Iorio
- 2014 – New York’s 12th congressional district (R, CON, IND) – lost
Richard Bradley Iott
- 2010 – Ohio’s 9th congressional district (R) – lost
Pasquale Iovino
- 1932 – Illinois’ at large congressional district (I) – lost
Henry C. Iram
- 1930 – United States Senate (New Hampshire) (Comm.) – lost
William C. Irby
- 1936 – United States Senate (Alabama) (I) – lost
Cecil R. Irelan
- 1934 – Michigan’s 2nd congressional district (SL) – lost
Andrew Poysell Ireland
- 1976 – Florida’s 8th congressional district (D) – won
- 1978 – Florida’s 8th congressional district (D) – won
- 1980 – Florida’s 8th congressional district (D) – won
- 1982 – Florida’s 10th congressional district (D) – won
- 1984 – Florida’s 10th congressional district (R) – won
- 1986 – Florida’s 10th congressional district (R) – won
- 1988 – Florida’s 10th congressional district (R) – won
- 1990 – Florida’s 10th congressional district (R) – won
Clifford Cady Ireland
- 1920 – Illinois’ 16th congressional district (R) – won
Ethel I. Ireland
- 1952 – Massachusetts’ 9th congressional district (Proh.) – lost
Harold J. Ireland
- 1954 – United States Senate (Massachusetts) (Proh.) – lost
Joel Ireland
- 1986 – Arizona’s 5th congressional district (D) – lost
Laura Ireland
- 2020 – Colorado’s 4th congressional district (Unity) – lost
Paul T. Ireland
- 2006 – California’s 35th congressional district (L) – lost
Thomas R. Ireland
- 1968 – Illinois’ 2nd congressional district (R) – lost
Diana Irey
- 2006 – Pennsylvania’s 12th congressional district (R) – lost
Nell K. Irion
- 1920 – Idaho’s 1st congressional district (D) – lost
Allan Irish
- 1936 – New York’s 26th congressional district (S) – lost
Chase Iron Eyes
- 2016 – North Dakota’s at large congressional district (DNL) – lost
Charles W. Irvin
- 1920 – New York’s 13th congressional district (S) – lost
Nate Irvin
- 2014 – Missouri’s 4th congressional district (D) – lost
Travis M. Irvine
- 2010 – Ohio’s 12th congressional district (L) – lost
Brian Irving
- 2012 – North Carolina’s 2nd congressional district (L) – lost
Don Irving
- 1944 – Illinois’ 20th congressional district (D) – lost
- 1946 – Illinois’ 20th congressional district (D) – lost
Leonard Theodore Irving
- 1948 – Missouri’s 4th congressional district (D) – won
- 1950 – Missouri’s 4th congressional district (D) – won
- 1952 – Missouri’s 4th congressional district (D) – lost
Robert A. Irving
- 1924 – New Jersey’s 1st congressional district (D) – lost
Samuel C. Irving
- 1926 – United States Senate (Illinois) (Ind.) – lost
Barry Gordon Irwin
- 2002 – Georgia’s 9th congressional district (D) – lost
Donald Jay Irwin
- 1958 – Connecticut’s 4th congressional district (D) – won
- 1960 – Connecticut’s 4th congressional district (D) – lost
- 1964 – Connecticut’s 4th congressional district (D) – won
- 1966 – Connecticut’s 4th congressional district (D) – won
- 1968 – Connecticut’s 4th congressional district (D) – lost
Edward Michael Irwin
- 1924 – Illinois’ 22nd congressional district (R) – won
- 1926 – Illinois’ 22nd congressional district (R) – won
- 1928 – Illinois’ 22nd congressional district (R) – won
- 1930 – Illinois’ 22nd congressional district (R) – lost
Harry E. Irwin
- 1936 – Michigan’s 17th congressional district (FL) – lost
James E. Irwin (Iowa)
- 1948 – Iowa’s 6th congressional district (D) – lost
James E. Irwin (Tennessee)
- 1968 – Tennessee’s 9th congressional district (D) – lost
Joe Bailey Irwin
- 1948 – Texas’ 5th congressional district (Prog.) – lost
John J. Irwin
- 1940 – Massachusetts’ 8th congressional district (R) – lost
