| Street B.E.A.T (Black Economic Action Team) | O | NV |
| Streicker for Congress, INC. | H | CT |
| Strength and Honor PAC | N | VA |
| Strength and Liberty PAC | O | CA |
| Strength and Progress INC | N | WY |
| Strength and Progress, INC. | I | WY |
| Strengthening the American Republic (Star) PAC | N | FL |
| Strengthening Transportation Education and Development in Youth Joint Fundraising Committee (Steady Jfc) | H | DC |
| Strengthening Virginia'S Working Families PAC | N | VA |
| Strengthen the Majority Committee | N | VA |
| Strengthen the Senate Majority 2018 | N | VA |
| Strength in Numbers USA PAC | O | IN |
| Strength in Seven PAC | N | OH |
| Streusand for Congress | H | TX |
| Strickland4congress2020 | H | GA |
| Strickland for Congress | H | CA |
| Strickland for Senate | S | OH |
| Strickland for Washington | H | WA |
| Strike PAC | O | CA |
| Stripe INC Political Action Committee | N | CA |
| St Rocco Foundation | O | NY |
| Strong America Fund | N | GA |
| Strong America PAC | V | CA |
| Strong Country for Today and Tomorrow (Scottpac) | Q | MA |
| Strong Democrat PAC | N | FL |
| Strong Economy and National Security PAC | N | CA |
| Stronger America | O | NC |
| Stronger Fairer Forward PAC | V | NJ |
| Stronger Foundations INC. | O | NJ |
| Stronger Foundations, INC. | N | NJ |
| Stronger Freedom Political Action Committee | O | GA |
| Stronger Government Through Christian Values PAC | N | AR |
| Stronger Maryland PAC | O | MD |
| Stronger Ny PAC | O | VA |
| Stronger Oh | O | OH |
| Stronger Pnw PAC Supporting Tiffany Smiley and Alek Skarlatos | N | VA |
| Stronger Tomorrow | O | NY |
| Stronger Unified | V | CA |
| Stronger Virginia Political Action Committee | V | VA |
| Stronger Washington PAC | N | VA |
| Strong Island Fund | N | WI |
| Strong Leaders Fund | O | VA |
| Strong Money PAC | O | FL |
| Strongnd PAC | O | FL |
| Strong Nh Action | N | NH |
| Strong Victory Fund | N | AL |
| Stroud Potus | P | WA |
| Structured Finance Coalition Political Action Committee (Structured Finance Pac) | N | DC |
| Strykr PAC | N | CA |
| St. Tammany Dpec PAC | X | LA |
| Stuart for Senate Campaign Committee | S | OH |
| Stuart Kiehl for President | P | CA |
| Stuart Ray for Congress | H | KY |
| Stuart Ross Farber MD | H | FL |
| Stuck for Congress | H | WI |
| Student Guardian PAC | O | CO |
| Students 4 Beto | U | TX |
| Students 4 Biden | U | TX |
| Students 4 Democracy | N | AL |
| Students 4 Democracy | N | AL |
| Students Against Unethical Student Housing Practices | P | AZ |
| Students for A New American Politics PAC | Q | CT |
| Students for Bernie | U | MO |
| Students for Better Social Interactions | O | TX |
| Students for Laurel Imer | H | CO |
| Students for Life Action | I | VA |
| Students for Life Action PAC | N | VA |
| Student Success Matters | O | OH |
| Stu for Indiana | H | IN |
| Stupp Bros INC Political Action Committee (Stupp Pac) | Q | MO |
| Sturm4congress | H | TX |
| Stutterers for Change | U | NY |
| Stutzman for Congress | H | IN |
| Stutzman Victory Committee | N | IN |
| Stv Group INC Political Action Committee | Q | PA |
| Style Worldwide Advocacy Group PAC (Swag Pac) | N | FL |
| Suarez for President, INC. | P | MD |
| Sua Sponte PAC | N | DC |
| Suburban Virginia Republican Coalition (Suv Gop) | V | VA |
| Suby for 2b Committee | X | MN |
| Success Charleston | O | WI |
| Sudbury Democratic Town Committee | X | MA |
| Sudduth for Congress | H | CA |
| Sud PAC | N | DC |
| Suez Water INC. Federal PAC | Q | NJ |
| Suffolk Construction Company, INC. PAC | N | CA |
| Suffolk County Correction Officers Association, INC. PAC | Q | NY |
| Suffolk County Patrolmen'S Benevolent Association Federal PAC (Scpba Federal Pac) | Q | NY |
| Suffolk County Republican Committee-Federal Account | X | NY |
| Sugar Cane Growers Cooperative of Florida (Pac) | Q | FL |
| Suhas for Virginia | H | VA |
| Suhas Victory Fund | N | VA |
| Sullivan for Congress | H | MN |
| Sullivan for Congress | H | CT |
| Sullivan for the Majority | N | VA |
| Sullivan Tillis Majority Committee | N | NC |
| Sullivan Victory 2020 | N | VA |
| Summe for Congress | H | IN |
| Summer Lee for Congress | H | PA |
| Summer Miller Campaign Committee | H | MA |
| Summer Spring Congressional Race Candidate | H | MD |
| Summit County Democratic Party Federal Committee | X | OH |
| Summit County Lincoln Day Committee | N | OH |
| Summit County Progressive Democrats Federal PAC | N | OH |
| Summit County Republican Party - Federal Account | X | OH |
| Summitt PAC | N | MN |
| Summit Utilities, INC. Political Action Committee (Summit Pac) | N | AR |
| Sumption for Congress | H | IL |
| Sumukh Kallur | X | MI |
| Sun City Democrats Club | N | TX |
| Sun City Democrats Club Informed Member PAC of Texas (Impact) | Q | TX |
| Sunflower Seeds PAC | N | KS |
| Sunflower State | O | KS |
| Sunkist Growers, INC. PAC - Federal | Q | CA |
| Sun Life Financial (U.S.) Services Company INC PAC Sun Life PAC | Q | MI |
| Sunnova Energy Corporation PAC | N | TX |
| Sunny Boy Group | O | CA |
| Sunny Chaparala for Congress | H | TX |
| Sunovion Pharmaceuticals INC. Good Governance Fund | Q | MA |
| Sun Political Action Committee (Sunpac) | Q | FL |
| Sunpower Corporation Political Action Committee | Q | TX |
| Sunrise Medical (Us) LLC Political Action Committee | N | CO |
| Sunrise PAC | W | DC |
| Sunrun INC Political Action Committee (Sunrun Pac) | Q | CA |
| Sunshine Colorado | O | CO |
| Sunshine for America PAC | O | FL |
| Sunshine Heroes PAC | N | FL |
| Sunshineonearth.Com | O | OH |
| Sunshineonearth.Comi | O | OH |
| Sunshineonearth.Comsm | O | OH |
| Sunshine Organization for Tremendous Opportunities (Soto Pac) | N | FL |
| Sunshine PAC | O | TX |
| Sunshinepac | O | IL |
| Sunshine Solutions | O | VA |
| Sunshine State Conservative Alliance | O | DC |
| Sunshine State Future Fund | O | PA |
| Sunshine State Super PAC | O | FL |
| Suntrust Banks of Tennessee, INC., Good Government Fund | Q | TN |
| Suozzi for Congress | H | NY |
| Suozzi Victory Fund | N | NY |
| Super Duper Super PAC | O | CA |
| Superfannypac | N | FL |
| Supergeek PAC | N | CA |
| Supergnd | O | DC |
| Superheroes for America | O | SD |
| Super Indie PAC | O | NV |
| Superintelligence for All | H | VA |
| Superior Air-Ground Ambulance Service INC Employees PAC (Superior Ambulance Employees P | Q | IL |
| Superior Credit Union Political Action Committee (Scu Pac) | N | OH |
| Supermajority PAC | O | NY |
| Supernova PAC | O | VA |
| Super States 2020 | N | DC |
| Super Women PAC | O | DC |
| Supima Political Action Committee-Supac | Q | AZ |
| Support American Leaders PAC | V | TX |
| Support America'S Police PAC | O | DC |
| Supporters 4 Calhoun | H | NV |
| Supporters for Lauren Mallett-Hays | H | AR |
| Supporters of Alex Entin | H | PA |
| Supporters of Brandon Ward | H | TX |
| Supporters of Brown Dudley | H | TN |
| Supporters of Engineers Local 3 Endorsed Candidates | Q | CA |
| Supporters of Jim Risch | S | DC |
| Supporters of Judy Herschel | H | PA |
| Supporters of Kerry Raheb for US Senate | S | VT |
| Supporters of Maya for Congress | H | NY |
| Supporters of Roger Henderson | H | MI |
| Supporting Conservatives of Today and Tomorrow (Scott Pac) | Q | NJ |
| Supporting Gabriel PAC | N | WA |
| Supporting House Problem Solvers - Shp PAC | N | DC |
| Supporting United States of America'S Next Leaders PAC (Susan Pac) | Q | IN |
| Support James Rives for President | X | IL |
| Support Local Police | N | FL |
| Support Our Firefighters and Paramedics PAC | O | DC |
| Support Our Police PAC INC. | O | DC |
| Support Our Seniors | I | LA |
| Support Republican Women Jfc | N | VA |
| Support Syrita Steib | S | LA |
| Support Taxfighters & Elect Effective Leaders PAC | W | CA |
| Support to Ensure Victory Everywhere PAC-Steve PAC | Q | VA |
| Support Your Preble Library PAC | N | OH |
| Supreme Billboards | O | TX |
| Supreme Court Judge Quinci Pryce | P | CA |
| Supreme Eugene 4' President | P | IL |
| Supreme President Quinci Pryce | P | CA |
| Surdi for Congress | H | NY |
| Surgeons Future PAC | O | CA |
| Surgery Partners, INC. Political Action Committee | N | TN |
| Surj PAC | V | NY |
| Survivor Political Action Committee (Dba Survivor Pac) | V | PA |
| Susan4congress | H | IL |
| Susana Amegatse | S | IL |
| Susanann for Congress | H | AR |
| Susan B. Anthony List Action PAC | O | VA |
| Susan B Anthony List INC | I | VA |
| Susan B Anthony List INC. Candidate Fund | Q | VA |
| Susan B Anthony List INC Dba Susan B Anthony Pro-Life America | C | VA |
| Susan Buchser-Lochocki for Congress | H | WV |
| Susan Collins for Congress | H | CA |
| Susan Davis for Congress | H | DC |