Harold Korn
- 1926 – New York’s 19th congressional district (R) – lost
H. B. Kornegay
- 1944 – North Carolina’s 3rd congressional district (R) – lost
- 1946 – North Carolina’s 3rd congressional district (R) – lost
Horace Robinson Kornegay
- 1960 – North Carolina’s 6th congressional district (D) – won
- 1962 – North Carolina’s 6th congressional district (D) – won
- 1964 – North Carolina’s 6th congressional district (D) – won
- 1966 – North Carolina’s 6th congressional district (D) – won
Wilburt Kornegay
- 1996 – United States Senate (New Jersey) (I) – lost
Ernest Kornfeld
- 1932 – Pennsylvania’s 5th congressional district (Comm.) – lost
John T. Korsmo
- 1992 – North Dakota’s at large congressional district (R) – lost
C. Max Kortepeter
- 1990 – New Jersey’s 12th congressional district (Independent Reform) – lost
Max Kortum
- 1954 – California’s 1st congressional district (D) – lost
William M. Kortum
- 1970 – California’s 1st congressional district (D) – lost
Eileen Koschak
- 1992 – Utah’s 2nd congressional district (SW) – lost
Charlotte Koskoff
- 1994 – Connecticut’s 6th congressional district (D, A Connecticut Party) – lost
- 1996 – Connecticut’s 6th congressional district (D, A Connecticut Party) – lost
- 1998 – Connecticut’s 6th congressional district (D) – lost
Henry P. Kosling
- 1950 – Ohio’s 19th congressional district (R) – lost
Suzanne M. Kosmas
- 2008 – Florida’s 24th congressional district (D) – won
- 2010 – Florida’s 24th congressional district (D) – lost
Joseph F. Koss
- 1954 – Michigan’s 15th congressional district (SL) – lost
Joseph Koss
- 1960 – Michigan’s 15th congressional district (SL) – lost
Jacqueline Kossoff
- 1996 – United States Senate (Delaware) (NL) – lost
William L. Kostar
- 1982 – Kansas’ 3rd congressional district (D) – lost
Greg Kostelac
- 1982 – Ohio’s 15th congressional district (D) – lost
John P. Kostelac
- 1976 – Pennsylvania’s 20th congressional district (R) – lost
Laurel L. Kosten
- 1934 – Michigan’s 5th congressional district (FL) – lost
John M. Koster
- 2000 – Washington’s 2nd congressional district (R) – lost
- 2010 – Washington’s 2nd congressional district (R) – lost
- 2012 – Washington’s 1st congressional district (Special) (R) – lost
- 2012 – Washington’s 1st congressional district (R) – lost
Peter Houston Kostmayer
- 1976 – Pennsylvania’s 8th congressional district (D) – won
- 1978 – Pennsylvania’s 8th congressional district (D) – won
- 1980 – Pennsylvania’s 8th congressional district (D) – lost
- 1982 – Pennsylvania’s 8th congressional district (D) – won
- 1984 – Pennsylvania’s 8th congressional district (D) – won
- 1986 – Pennsylvania’s 8th congressional district (D) – won
- 1988 – Pennsylvania’s 8th congressional district (D) – won
- 1990 – Pennsylvania’s 8th congressional district (D) – won
- 1992 – Pennsylvania’s 8th congressional district (D) – lost
Donald Kostyu
- 1984 – Michigan’s 16th congressional district (L) – lost
Kimon Kotos
- 2004 – Michigan’s 2nd congressional district (D) – lost
- 2006 – Michigan’s 2nd congressional district (D) – lost
Robert V. Kotowski
- 1964 – Illinois’ 5th congressional district (R) – lost
- 1980 – Illinois’ 5th congressional district (R) – lost
Kenneth A. Kottka
- 1970 – Oklahoma’s 4th congressional district (I) – lost
Joseph Kottler
- 1968 – New York’s 16th congressional district (Liberal) – lost
Chris Kouri
- 2002 – North Carolina’s 8th congressional district (D) – lost
Peter Kouvelis
- 2000 – California’s 48th congressional district (D) – lost
Janice Kovach
- 2014 – New Jersey’s 7th congressional district (D) – lost
Thomas F. Kovach (New York)
- 1994 – New York’s 26th congressional district (RTL) – lost
Thomas F. Kovach (Tennessee)
- 2004 – Tennessee’s 5th congressional district (W/I) – lost
- 2006 – Tennessee’s 5th congressional district (R) – lost
Thomas H. Kovach
- 2012 – Delaware’s at large congressional district (R) – lost
Kovaka
- 1938 – Missouri’s 12th congressional district (S) – lost
Gary M. Koval
- 1998 – Connecticut’s 2nd congressional district (R) – lost
Chuck Kovaleski
- 1992 – Florida’s 8th congressional district (D) – lost
Miro Drago Kovatchevich
- 2002 – United States Senate (Minnesota) (C) – lost
Joel Kovel
- 1998 – United States Senate (New York) (G) – lost
I. George Koven
- 1920 – New Jersey’s 11th congressional district (S) – lost
Kenneth Kowalczyk
- 1974 – New Jersey’s 8th congressional district (SL) – lost
Joseph H. Kowalkowski
- 1936 – Minnesota’s 6th congressional district (D) – lost
Frank Kowalski
- 1958 – Connecticut’s at large congressional district (D) – won
- 1960 – Connecticut’s at large congressional district (D) – won
Kenneth J. Kowalski
- 1990 – New York’s 32nd congressional district (CON, RTL) – lost
- 1992 – New York’s 29th congressional district (RTL) – lost
Frank J. Kownacki
- 1940 – Pennsylvania’s 3rd congressional district (R) – lost
Edward N. Kowzan
- 1946 – Maryland’s 3rd congressional district (R) – lost
William Kozak, Jr.
- 1976 – Connecticut’s 5th congressional district (George Wallace) – lost
- 1998 – United States Senate (Connecticut) (C) – lost
- 2000 – United States Senate (Connecticut) (Concerned Citizens) – lost
Edward J. Kozak
- 1994 – Wisconsin’s 1st congressional district (L) – lost
Robert E. Kozak
- 2006 – Maryland’s 6th congressional district (G) – lost
Leo J. Kozicki
- 1944 – Illinois’ 4th congressional district (R) – lost
Ralph L. Kraemer
- 1966 – Nevada’s at large congressional district (R) – lost
