Howard P. Sompayrac, Jr.
- 1972 – Tennessee’s 3rd congressional district (D) – lost
Inder Jit Soni
- 2012 – United States Senate (New Jersey) (America First) – lost
- 2022 – New Jersey’s 6th congressional district (I) – lost
Brent Sonnek-schmelz
- 2016 – New Jersey’s 6th congressional district (R) – lost
John Sonneland
- 1980 – Washington’s 5th congressional district (R) – lost
- 1982 – Washington’s 5th congressional district (R) – lost
- 1992 – Washington’s 5th congressional district (R) – lost
Joseph A. Sonneman
- 1998 – United States Senate (Alaska) (D) – lost
Joanne D. Soper
- 1976 – Iowa’s 6th congressional district (R) – lost
John Peter Sophocleus
- 2000 – Alabama’s 3rd congressional district (L) – lost
- 2022 – United States Senate (Alabama) (L) – lost
Christian Sorenson
- 1928 – California’s 9th congressional district (S) – lost
Eric Sorensen
- 2022 – Illinois’ 17th congressional district (D) – won
Karl G. Sorg
- 1998 – Oregon’s 4th congressional district (S) – lost
Michael Soriano
- 1980 – United States Senate (Illinois) (Workers) – lost
Donald R. Sorkow
- 1962 – New Jersey’s 9th congressional district (D) – lost
Martin Sorrells
- 1980 – Texas’ 2nd congressional district (L) – lost
Richard Sorrentino
- 1996 – New Jersey’s 6th congressional district (I) – lost
Dan Sosa, Jr.
- 1992 – New Mexico’s 2nd congressional district (D) – lost
Joe Sosa
- 2020 – Texas’ 9th congressional district (L) – lost
John Bartholomew Sosnowski
- 1924 – Michigan’s 1st congressional district (R) – won
- 1942 – Michigan’s 1st congressional district (R) – lost
- 1944 – Michigan’s 1st congressional district (R) – lost
- 1946 – Michigan’s 1st congressional district (R) – lost
Marc J. Sosnowski
- 2010 – Michigan’s 14th congressional district (T) – lost
- 2012 – Michigan’s 11th congressional district (Special) (T) – lost
- 2018 – Michigan’s 13th congressional district (Special) (T) – lost
Jeffrey Sossa-Paquette
- 2022 – Massachusetts’ 2nd congressional district (R) – lost
Frank W. Sotak
- 1934 – Ohio’s 21st congressional district (R) – lost
Darren Soto
- 2016 – Florida’s 9th congressional district (D) – won
- 2018 – Florida’s 9th congressional district (D) – won
- 2020 – Florida’s 9th congressional district (D) – won
- 2022 – Florida’s 9th congressional district (D) – won
John R. Soto
- 1990 – Massachusetts’ 4th congressional district (R) – lost
Rudy Soto
- 2020 – Idaho’s 1st congressional district (D) – lost
Thomas Soto
- 1980 – United States Senate (New York) (WW) – lost
Mark Edward Souder
- 1994 – Indiana’s 4th congressional district (R) – won
- 1996 – Indiana’s 4th congressional district (R) – won
- 1998 – Indiana’s 4th congressional district (R) – won
- 2000 – Indiana’s 4th congressional district (R) – won
- 2002 – Indiana’s 3rd congressional district (R) – won
- 2004 – Indiana’s 3rd congressional district (R) – won
- 2006 – Indiana’s 3rd congressional district (R) – won
- 2008 – Indiana’s 3rd congressional district (R) – won
Merrie Lee Soues
- 2016 – New Mexico’s 2nd congressional district (D) – lost
Charles F. Sougherty
- 1992 – Pennsylvania’s 3rd congressional district (R) – lost
Francis J. Souhan
- 1948 – New York’s 38th congressional district (D) – lost
- 1960 – New York’s 36th congressional district (D) – lost
Walter Soule
- 1940 – New York’s 35th congressional district (American Labor) – lost
Benjamin K. Souler
- 1966 – New York’s 34th congressional district (CON) – lost
Bernie Souphanavong
- 2016 – Alaska’s at-large congressional district (NA) – lost
Sidney S. Souter
- 1968 – New Jersey’s 4th congressional district (R) – lost
Arthur South
- 1946 – Alabama’s 8th congressional district (R) – lost
Charles Lacy South
- 1934 – Texas’ 21st congressional district (D) – won
- 1936 – Texas’ 21st congressional district (D) – won
- 1938 – Texas’ 21st congressional district (D) – won
- 1940 – Texas’ 21st congressional district (D) – won
William Steve Southerland II
- 2010 – Florida’s 2nd congressional district (R) – won
- 2012 – Florida’s 2nd congressional district (R) – won
- 2014 – Florida’s 2nd congressional district (R) – lost
John L. Southwick, Jr.
- 1952 – Massachusetts’ 7th congressional district (R) – lost
Kevin Southwick
- 1988 – Texas’ 25th congressional district (L) – lost
Frank Southworth
- 1974 – Colorado’s 1st congressional district (R) – lost
Daniel K. Souza
- 2014 – Oregon’s 5th congressional district (L) – lost
- 2018 – Oregon’s 5th congressional district (L) – lost
Travis O. Souza
- 2002 – Nevada’s 2nd congressional district (D) – lost
Tim Sovde
- 2010 – United States Senate (Alaska) (W/I) – lost
Steve Sovern
- 1980 – Iowa’s 2nd congressional district (D) – lost
Joseph M. Soviero
- 1952 – New York’s 9th congressional district (R) – lost
George Sowash
- 1936 – Pennsylvania’s 26th congressional district (Proh.) – lost
Earl C. Sowder
- 1946 – Arkansas’ 5th congressional district (Ind. Rep.) – lost
Wayne Sowell
- 2004 – United States Senate (Alabama) (D) – lost
Claude Edward Sowers
- 1934 – Missouri’s 5th congressional district (R) – lost
Rosslyn L. Sowers
- 1930 – Michigan’s 3rd congressional district (D) – lost
- 1936 – Michigan’s 3rd congressional district (D) – lost
Tommy Sowers
- 2010 – Missouri’s 8th congressional district (D) – lost
Henry N. Spaan
- 1920 – Indiana’s 7th congressional district (D) – lost
