Frederick Krafft
- 1920 – New Jersey’s 6th congressional district (S) – lost
- 1924 – New Jersey’s 6th congressional district (Prog.) – lost
Louis O. Krahl
- 1924 – Connecticut’s 3rd congressional district (S) – lost
George Todd Krail II
- 2012 – Iowa’s 1st congressional district (Nominated By Petition) – lost
Henry Krajewski
- 1954 – United States Senate (New Jersey) (American Third Party) – lost
- 1958 – United States Senate (New Jersey) (Politicians Are Jokers) – lost
John E. Kralisz
- 1938 – New York’s 42nd congressional district (I) – lost
A. Ludlow Kramer
- 1974 – Washington’s 3rd congressional district (R) – lost
Charles Kramer
- 1932 – California’s 13th congressional district (D) – won
- 1934 – California’s 13th congressional district (D) – won
- 1936 – California’s 13th congressional district (D) – won
- 1938 – California’s 13th congressional district (D, Prog.) – won
- 1940 – California’s 13th congressional district (D, R) – won
- 1942 – California’s 13th congressional district (D) – lost
Clarence R. Kramer
- 1926 – Pennsylvania’s 23rd congressional district (D) – lost
David F. Kramer
- 1996 – California’s 41st congressional district (NL) – lost
- 1998 – California’s 41st congressional district (NL) – lost
- 2000 – California’s 41st congressional district (NL) – lost
Donald W. Kramer
- 1940 – New York’s 34th congressional district (D) – lost
Kenneth Bentley Kramer
- 1978 – Colorado’s 5th congressional district (R) – won
- 1980 – Colorado’s 5th congressional district (R) – won
- 1982 – Colorado’s 5th congressional district (R) – won
- 1984 – Colorado’s 5th congressional district (R) – won
- 1986 – United States Senate (Colorado) (R) – lost
Samuel Kramer
- 1940 – New York’s 17th congressional district (D) – lost
Sidney Kramer
- 1974 – Maryland’s 8th congressional district (D) – lost
W. P. Kramer
- 1920 – New Jersey’s 1st congressional district (D) – lost
Paul Krane
- 2016 – Tennessee’s 1st congressional district (W/I) – lost
C. E. Kranmer
- 1922 – North Carolina’s 1st congressional district (R) – lost
Cathrine Krantz
- 2018 – Texas’ 4th congressional district (D) – lost
James P. Krapf
- 1988 – Delaware’s at large congressional district (R) – lost
Joseph J. Krasowski
- 1968 – Illinois’ 5th congressional district (R) – lost
Frank Michael Kratovil, Jr.
- 2008 – Maryland’s 1st congressional district (D) – won
- 2010 – Maryland’s 1st congressional district (D) – lost
Duane E. Kratzer, Jr.
- 2000 – North Carolina’s 1st congressional district (R) – lost
Steve Kraus
- 2018 – Ohio’s 9th congressional district (R) – lost
Milton Kraus
- 1920 – Indiana’s 11th congressional district (R) – won
- 1922 – Indiana’s 11th congressional district (R) – lost
Mortimer Kraus
- 1930 – New York’s 21st congressional district (R) – lost
Benjamin Lee Krause
- 2016 – Maryland’s 4th congressional district (L) – lost
Elizabeth Mercedes Krause
- 2022 – Nevada’s 2nd congressional district (D) – lost
J. Marvin Krause
- 1962 – Missouri’s 3rd congressional district (R) – lost
J. Willard Krause
- 1946 – Michigan’s 9th congressional district (D) – lost
John Krause (Florida)
- 2010 – Florida’s 1st congressional district (I) – lost
John Krause (Wisconsin)
- 1984 – Wisconsin’s 9th congressional district (D) – lost
John F. Krause
- 1922 – Illinois’ 4th congressional district (S) – lost
- 1924 – Illinois’ 4th congressional district (S) – lost
William V. Krause
- 1984 – Kansas’ 4th congressional district (R) – lost
Fred D. Krauss
- 2000 – Washington’s 4th congressional district (L) – lost
Jeff Kravitz
- 2006 – California’s 5th congressional district (G) – lost
Kenneth V. Krawchuk
- 2000 – Pennsylvania’s 2nd congressional district (L) – lost
William L. Krayer
- 1980 – Pennsylvania’s 22nd congressional district (L) – lost
Kenneth Krayeske
- 2010 – Connecticut’s 1st congressional district (G) – lost
E. Gregory Kreage
- 1996 – New Jersey’s 5th congressional district (I) – lost
William B. Krebaum
- 1980 – Michigan’s 17th congressional district (L) – lost
- 1982 – Michigan’s 1st congressional district (L) – lost
John Hans Krebs
- 1974 – California’s 17th congressional district (D) – won
- 1976 – California’s 17th congressional district (D) – won
- 1978 – California’s 17th congressional district (D) – lost
Paul Joseph Krebs
- 1964 – New Jersey’s 12th congressional district (D) – won
- 1972 – United States Senate (New Jersey) (D) – lost
Frederick Kreckman
- 1928 – Pennsylvania’s 5th congressional district (S) – lost
Kenneth J. Krefft
- 2016 – Louisiana’s 4th congressional district (No Party) – lost first round
Peter Krehel
- 1952 – Pennsylvania’s 12th congressional district (D) – lost
Aaron Shenk Kreider
- 1920 – Pennsylvania’s 18th congressional district (R) – won
- 1922 – Pennsylvania’s 19th congressional district (R) – lost
Michael Bradford Kreidler
- 1992 – Washington’s 9th congressional district (D) – won
- 1994 – Washington’s 9th congressional district (D) – lost
Adolph F. Kreie
- 1944 – Wisconsin’s 10th congressional district (S) – lost
- 1946 – Wisconsin’s 10th congressional district (S) – lost
- 1948 – Wisconsin’s 10th congressional district (S) – lost
Cheryl Kreier
- 2000 – California’s 1st congressional district (NL) – lost
Peggy Kreiner
- 1984 – Kentucky’s 3rd congressional district (SW) – lost
Walter H. Kreiner
- 1926 – New York’s 3rd congressional district (R) – lost
