Marge Krupp
- 2008 – Wisconsin’s 1st congressional district (D) – lost
Victor Kruppenbacher
- 1952 – New York’s 38th congressional district (D, Liberal) – lost
Mary Anne Krupsak
- 1980 – New York’s 30th congressional district (D, Liberal) – lost
Dick Kruse
- 1996 – Iowa’s 3rd congressional district (L) – lost
Edward H. Kruse
- 1948 – Indiana’s 4th congressional district (D) – won
- 1950 – Indiana’s 4th congressional district (D) – lost
Jacob M. Kruse
- 1926 – Montana’s 2nd congressional district (S) – lost
- 1928 – Montana’s 2nd congressional district (S) – lost
- 1930 – Montana’s 2nd congressional district (S) – lost
John D. Kruse
- 1960 – Florida’s 6th congressional district (R) – lost
William F. Kruse
- 1920 – Illinois’ 6th congressional district (S) – lost
Dan Krusynski
- 1996 – Michigan’s 2nd congressional district (D) – lost
Daniel H. Krymkowski
- 2000 – Vermont’s at large congressional district (L) – lost
- 2002 – Vermont’s at large congressional district (L) – lost
John Krymski
- 2004 – Oklahoma’s 1st congressional district (I) – lost
Michael Krynski
- 2016 – Illinois’ 5th congressional district (W/I) – lost
Alice Kryzan
- 2008 – New York’s 26th congressional district (D) – lost
Leo Krzycki
- 1924 – Wisconsin’s 4th congressional district (S) – lost
- 1926 – United States Senate (Wisconsin) (S) – lost
Dirk Kubala
- 2018 – Ohio’s 1st congressional district (L) – lost
Dan Kubiak
- 1984 – Texas’ 6th congressional district (D) – lost
John L. Kucek
- 1990 – United States Senate (New Jersey) (Pop.) – lost
- 1992 – New Jersey’s 7th congressional district (America First Populist) – lost
Charles Kuchan
- 1922 – Missouri’s 12th congressional district (SL) – lost
- 1924 – Missouri’s 12th congressional district (SL) – lost
- 1926 – Missouri’s 12th congressional district (SL) – lost
- 1930 – Missouri’s 12th congressional district (SL) – lost
Thomas Henry Kuchel
- 1954 – United States Senate (California) (Special) (R) – won
- 1956 – United States Senate (California) (R) – won
- 1962 – United States Senate (California) (R) – won
F. K. Kuchenbecker
- 1920 – Illinois’ at large congressional district (SL) – lost
Dennis John Kucinich
- 1972 – Ohio’s 23rd congressional district (D) – lost
- 1974 – Ohio’s 23rd congressional district (I) – lost
- 1996 – Ohio’s 10th congressional district (D) – won
- 1998 – Ohio’s 10th congressional district (D) – won
- 2000 – Ohio’s 10th congressional district (D) – won
- 2002 – Ohio’s 10th congressional district (D) – won
- 2004 – Ohio’s 10th congressional district (D) – won
- 2006 – Ohio’s 10th congressional district (D) – won
- 2008 – Ohio’s 10th congressional district (D) – won
- 2010 – Ohio’s 10th congressional district (D) – won
Scott Kudalis
- 2014 – Tennessee’s 1st congressional district (I-W/I) – lost
Howard A. Kudler
- 2010 – New York’s 3rd congressional district (D) – lost
Alexander Kudlik
- 1930 – United States Senate (New Jersey) (SL) – lost
- 1958 – New Jersey’s 6th congressional district (SL) – lost
- 1960 – New Jersey’s 6th congressional district (SL) – lost
Nicholas W. Kudrovzeff
- 1972 – California’s 11th congressional district (American) – lost
- 1974 – California’s 11th congressional district (AI) – lost
- 1976 – California’s 11th congressional district (AI) – lost
- 1978 – California’s 11th congressional district (AI) – lost
- 1979 – California’s 11th congressional district (Special) (AI) – lost
- 1980 – California’s 11th congressional district (AI) – lost
- 1982 – California’s 11th congressional district (AI) – lost
Jane M. Kuebbeler
- 1966 – Ohio’s 9th congressional district (R) – lost
Hans J. Kugler
- 2010 – United States Senate (California) (IND-W/I) – lost
John Randy Kuhl, Jr.
- 2004 – New York’s 29th congressional district (R) – won
- 2006 – New York’s 29th congressional district (R, IND, CON) – won
- 2008 – New York’s 29th congressional district (R, IND, CON) – lost
Michael A. Kuhle
- 1988 – Florida’s 15th congressional district (D) – lost
Henry Kuhlman
- 1922 – Ohio’s 21st congressional district (S) – lost
Henry Kuhn
- 1922 – United States Senate (New York) (SL) – lost
- 1928 – United States Senate (New York) (SL) – lost
James B. Kuhn
- 1970 – California’s 37th congressional district (R) – lost
Richard D. Kuhn
- 1964 – Michigan’s 19th congressional district (R) – lost
Peter Kuhnert
- 2006 – Maryland’s 5th congressional district (C) – lost
Justin Kuhnle
- 2014 – Indiana’s 3rd congressional district (D) – lost
John Kuipec
- 2010 – Michigan’s 5th congressional district (R) – lost
Adam Kujtkowski
- 1952 – Michigan’s 1st congressional district (Prog.) – lost
Christopher Kula
- 2008 – California’s 9th congressional district (R-W/I) – lost
Paul Kulas
- 1990 – Connecticut’s 6th congressional district (D) – lost
Jaimie Kulikowski
- 2020 – Colorado’s 6th congressional district (Unity) – lost
Philip C. Kulinski
- 1948 – Maryland’s 3rd congressional district (Prog.) – lost
Sri Preston Kulkarni
- 2018 – Texas’ 22nd congressional district (D) – lost
- 2020 – Texas’ 22nd congressional district (D) – lost
Bart Kull
- 1980 – South Dakota’s 1st congressional district (R) – lost
David Kulma
- 2017 – South Carolina’s 5th congressional district (Special) (G) – lost
Theodore Ralph Kulongoski
- 1980 – United States Senate (Oregon) (D) – lost
Nancy Kulp
- 1984 – Pennsylvania’s 9th congressional district (D) – lost
Kelly Kultala
- 2014 – Kansas’ 3rd congressional district (D) – lost
Anil Kumar
- 2016 – Michigan’s 11th congressional district (D) – lost
Raj Kumar
- 1978 – Pennsylvania’s 19th congressional district (D) – lost
Rishi Kumar
- 2020 – California’s 18th congressional district (D) – lost
- 2022 – California’s 16th congressional district (D) – lost
