William Irving Sirovich
- 1924 – New York’s 14th congressional district (D) – lost
- 1926 – New York’s 14th congressional district (D) – won
- 1928 – New York’s 14th congressional district (D) – won
- 1932 – New York’s 14th congressional district (D) – won
- 1934 – New York’s 14th congressional district (D) – won
- 1936 – New York’s 14th congressional district (D) – won
- 1938 – New York’s 14th congressional district (D, American Labor) – won
Norman Sisisky
- 1982 – Virginia’s 4th congressional district (D) – won
- 1984 – Virginia’s 4th congressional district (D) – won
- 1986 – Virginia’s 4th congressional district (D) – won
- 1988 – Virginia’s 4th congressional district (D) – won
- 1990 – Virginia’s 4th congressional district (D) – won
- 1992 – Virginia’s 4th congressional district (D) – won
- 1994 – Virginia’s 4th congressional district (D) – won
- 1996 – Virginia’s 4th congressional district (D) – won
- 1998 – Virginia’s 4th congressional district (D) – won
- 2000 – Virginia’s 4th congressional district (D) – won
Bernice Frederic Sisk
- 1954 – California’s 12th congressional district (D) – won
- 1956 – California’s 12th congressional district (D) – won
- 1958 – California’s 12th congressional district (D) – won
- 1960 – California’s 12th congressional district (D) – won
- 1962 – California’s 16th congressional district (D) – won
- 1964 – California’s 16th congressional district (D) – won
- 1966 – California’s 16th congressional district (D) – won
- 1968 – California’s 16th congressional district (D) – won
- 1970 – California’s 16th congressional district (D) – won
- 1972 – California’s 16th congressional district (D) – won
- 1974 – California’s 15th congressional district (D) – won
- 1976 – California’s 15th congressional district (D) – won
Solomon Siss
- 1934 – New York’s 12th congressional district (R) – lost
Mrs. Kunia Sissman
- 1924 – Illinois’ 10th congressional district (S) – lost
Dan Sisson
- 1976 – California’s 19th congressional district (D) – lost
Frederick James Sisson
- 1922 – New York’s 33rd congressional district (D) – lost
- 1928 – New York’s 33rd congressional district (D) – lost
- 1932 – New York’s 33rd congressional district (D) – won
- 1934 – New York’s 33rd congressional district (D) – won
- 1936 – New York’s 33rd congressional district (D) – lost
Ray S. Sisson
- 1930 – Indiana’s 2nd congressional district (R) – lost
Thomas Upton Sisson
- 1920 – Mississippi’s 4th congressional district (D) – won
Frank Crawford Sites
- 1922 – Pennsylvania’s 19th congressional district (D) – won
- 1924 – Pennsylvania’s 19th congressional district (D) – lost
- 1926 – Pennsylvania’s 19th congressional district (D) – lost
Leo Sitko
- 1934 – Pennsylvania’s 13th congressional district (S) – lost
Valeria M. Sitter
- 1972 – Wisconsin’s 6th congressional district (AI) – lost
Edward Lewis Sittler, Jr.
- 1950 – Pennsylvania’s 23rd congressional district (R) – won
- 1952 – Pennsylvania’s 26th congressional district (R) – lost
Obi Sium
- 2006 – Minnesota’s 4th congressional district (R) – lost
David Sive
- 1958 – New York’s 28th congressional district (D) – lost
Owen Sivertson
- 2000 – Minnesota’s 7th congressional district (C) – lost
John M. Siviter
- 1968 – Michigan’s 17th congressional district (R) – lost
Alice B. Sivulich
- 1976 – Pennsylvania’s 15th congressional district (R) – lost
Peter O. Sjodin
- 1934 – Minnesota’s 3rd congressional district (I) – lost
Candice E. Sjostrom
- 1994 – United States Senate (Minnesota) (Grassroots) – lost
David Evans Skaggs
- 1986 – Colorado’s 2nd congressional district (D) – won
- 1988 – Colorado’s 2nd congressional district (D) – won
- 1990 – Colorado’s 2nd congressional district (D) – won
- 1992 – Colorado’s 2nd congressional district (D) – won
- 1994 – Colorado’s 2nd congressional district (D) – won
- 1996 – Colorado’s 2nd congressional district (D) – won
Sally Harris Skaggs
- 1994 – Kentucky’s 4th congressional district (D) – lost
James Ronald Skains
- 2000 – Louisiana’s 4th congressional district (Other) – lost
George A. Skalsky
- 2014 – Ohio’s 9th congressional district (W/I) – lost
- 2016 – Ohio’s 9th congressional district (W/I) – lost
George Skaritka
- 1996 – Illinois’ 3rd congressional district (Ref.) – lost
Aleksander Reed Skarlatos
- 2020 – Oregon’s 4th congressional district (R) – lost
- 2022 – Oregon’s 4th congressional district (R) – lost
Charles W. Skeele, Jr.
- 1994 – New York’s 23rd congressional district (D) – lost
Joseph Richard Skeen
- 1980 – New Mexico’s 2nd congressional district (R) – won
- 1982 – New Mexico’s 2nd congressional district (R) – won
- 1984 – New Mexico’s 2nd congressional district (R) – won
- 1986 – New Mexico’s 2nd congressional district (R) – won
- 1988 – New Mexico’s 2nd congressional district (R) – won
- 1990 – New Mexico’s 2nd congressional district (R) – won
- 1992 – New Mexico’s 2nd congressional district (R) – won
- 1994 – New Mexico’s 2nd congressional district (R) – won
- 1996 – New Mexico’s 2nd congressional district (R) – won
- 1998 – New Mexico’s 2nd congressional district (R) – won
- 2000 – New Mexico’s 2nd congressional district (R) – won
David G. Skehan
- 1980 – Massachusetts’ 3rd congressional district (R) – lost
Michael Peter Skelly
- 2008 – Texas’ 7th congressional district (D) – lost
Arch M. Skelton
- 1966 – Missouri’s 7th congressional district (D) – lost
Isaac Newton Skelton IV
- 1976 – Missouri’s 4th congressional district (D) – won
- 1978 – Missouri’s 4th congressional district (D) – won
- 1980 – Missouri’s 4th congressional district (D) – won
- 1982 – Missouri’s 4th congressional district (D) – won
- 1984 – Missouri’s 4th congressional district (D) – won
- 1986 – Missouri’s 4th congressional district (D) – won
- 1988 – Missouri’s 4th congressional district (D) – won
- 1990 – Missouri’s 4th congressional district (D) – won
- 1992 – Missouri’s 4th congressional district (D) – won
- 1994 – Missouri’s 4th congressional district (D) – won
- 1996 – Missouri’s 4th congressional district (D) – won
- 1998 – Missouri’s 4th congressional district (D) – won
- 2000 – Missouri’s 4th congressional district (D) – won
- 2002 – Missouri’s 4th congressional district (D) – won
- 2004 – Missouri’s 4th congressional district (D) – won
- 2006 – Missouri’s 4th congressional district (D) – won
- 2008 – Missouri’s 4th congressional district (D) – won
- 2010 – Missouri’s 4th congressional district (D) – lost
Chester T. Skibinski
- 1950 – Massachusetts’ 2nd congressional district (R) – lost
David E. Skinner
- 1984 – California’s 37th congressional district (D) – lost
- 1986 – California’s 37th congressional district (D) – lost
Edward S. Skinner
- 1976 – California’s 28th congressional district (R) – lost
Fawn Skinner
- 2002 – Vermont’s at large congressional district (Vermont Grassroots) – lost
Henry Skinner
- 1920 – Ohio’s 21st congressional district (I) – lost
Nancy Skinner
- 2006 – Michigan’s 9th congressional district (D) – lost
Susan A. Skinner
- 1982 – Ohio’s 9th congressional district (I) – lost
Glenn B. Skipper
- 1932 – Florida’s at large congressional district (R) – lost
Shane Sklar
- 2006 – Texas’ 14th congressional district (D) – lost
John R. Skone-Palmer
- 2000 – Texas’ 7th congressional district (W/I) – lost
- 2002 – Texas’ 7th congressional district (W/I) – lost
Dolores Skore
- 1978 – California’s 5th congressional district (R) – lost
Otto Skottedal
- 1950 – New York’s 1st congressional district (American Labor) – lost
- 1952 – New York’s 1st congressional district (American Labor) – lost
Skoven
- 1922 – Missouri’s 12th congressional district (S) – lost
Selmer Skreen
- 1942 – Washington’s 6th congressional district (SL) – lost
Stewart Skrill
- 2000 – Vermont’s at large congressional district (I) – lost
Nicholas Skrivanek
- 2000 – Minnesota’s 4th congressional district (C) – lost
Joe Skubitz
- 1962 – Kansas’ 5th congressional district (R) – won
- 1964 – Kansas’ 5th congressional district (R) – won
- 1966 – Kansas’ 5th congressional district (R) – won
- 1968 – Kansas’ 5th congressional district (R) – won
- 1970 – Kansas’ 5th congressional district (R) – won
- 1972 – Kansas’ 5th congressional district (R) – won
- 1974 – Kansas’ 5th congressional district (R) – won
- 1976 – Kansas’ 5th congressional district (R) – won
Lynn Slaby
- 1986 – Ohio’s 14th congressional district (R) – lost
- 1994 – Ohio’s 14th congressional district (R) – lost
