| Carlos J Reyes for Congress Committee, INC. | H | FL |
| Carl Persson for US Congress | H | NC |
| Carl Sherman for Texas | S | TX |
| Carlson for Congress | H | RI |
| Carlton 4 US Senate | S | UT |
| Carlton for 6th | H | GA |
| Carlucci for Congress | H | NY |
| Carly for America | W | VA |
| Carly for Congress | H | WV |
| Carmelita for Congress | H | MI |
| Carmelo Pinnavaria | P | IL |
| Carmen Goers for Congress | H | WA |
| Carmen Montiel for Congress | H | TX |
| Carmen'S List | O | FL |
| Carmeuse Lime Inc.Pac | N | PA |
| Carmichael for US Senate | S | IN |
| Carmona for Congress | H | CA |
| Carnevale for Congress | H | FL |
| Carol Blood for Congress | H | NE |
| Carole Brown for Congress | H | MD |
| Carole Cheney for Congress | H | IL |
| Carol for Congress | H | WV |
| Carol Hafner for Congress | H | SD |
| Carol Hafner for President | P | SD |
| Carol Hafner for Wyoming | H | SD |
| Carolina Blue | O | NC |
| Carolina Comeback PAC | O | NC |
| Carolina Federation | I | NC |
| Carolina Federation Federal PAC | N | NC |
| Carolina for Congress | H | NV |
| Carolina Mavericks Knott McDowell | H | NC |
| Carolina Neurosurgery and Spine Associates P A PAC | N | NC |
| Carolinas Credit Union League Credit Union Defense Fund | Q | SC |
| Carolina Senate Fund | O | VA |
| Carolina Victory Fund | N | DC |
| Caroline Aebi | P | CA |
| Caroline Colarusso for Congress | H | DC |
| Caroline Gray Jl Super PAC | O | MD |
| Caroline Kane for Congress | H | TX |
| Caroline Victory Fund | N | DC |
| Carolinians for Freedom | E | DC |
| Carol Murphy for Congress | H | NJ |
| Carolyn Davis | O | TX |
| Carolyn for Congress | H | GA |
| Carolyn Long Victory Fund 2020 | N | WA |
| Carolyn Maloney Ballot Canvass Fund | H | NY |
| Carolyn Rush for Congress | H | NJ |
| Carolyn Salter for Congress | H | TX |
| Carolyn'S PAC | Q | NY |
| Carolyn Victory Fund | N | GA |
| Carpenter for Congress | H | IN |
| Carpenters Legislative Improvement Committee United Brotherhood of Carpenters and Joiners | Q | DC |
| Carper for Senate | S | DE |
| Carp for Congress | H | OH |
| Carpio for Congress | H | VA |
| Carr for Congress | H | CA |
| Carrick Flynn for Oregon | H | OR |
| Carrie for President 2020 | P | NM |
| Carrie Kennedy 4 America | H | WA |
| Carrie Mae Marcy for President | P | MA |
| Carrie Mae Marcy for President 2028 | P | MA |
| Carrier for Congress INC. | H | IN |
| Carrier Global Corporation Political Action Committee | N | FL |
| Carrier PAC | N | GA |
| Carrier PAC | N | GA |
| Carrigan for Congress | H | SC |
| Carris for Congress | H | IL |
| Carrizales for Congress | H | TX |
| Carroll Montague Price, Jr. | P | KY |
| Carry on PAC | N | GA |
| Carry the Torch | O | MA |
| Carson 4 Congress Principal Committee | H | TX |
| Carson America | P | TX |
| Carson-Hale Hoosier Fund | H | IN |
| Carson Jorgensen for Congress | H | UT |
| Carson Loveless for President 2024 | P | MD |
| Carson Residents for Better Government | N | CA |
| Carter for Congress | H | FL |
| Carter Morgan for Congress | H | FL |
| Cartwright for Congress | H | PA |
| Cartwright Victory Fund | N | PA |
| Cartwright Wild Fund | H | RI |
| Caruso-Cabrera for New York | H | NY |
| Caruso for Congress | H | ME |
| Caryn for Congress INC | H | KS |
| Casady for Congress | H | CA |
| Casa in Action | C | MD |
| Casa in Action INC. | I | MD |
| Casa in Action PAC | O | MD |
| Casar-Lee Committee | H | DC |
| Casas for the 11th | H | TX |
| Case Action Fund | I | AZ |
| Case for Congress | H | UT |
| Case for Congress | H | HI |
| Ca Senate Republican Nominee Fund 2022 | N | VA |
| Ca Senate Republican Nominee Fund 2024 | N | VA |
| Case New Holland Industrial INC. Excellence in Government Fund (Cnh Industrial Excellence in Government Fund) | Q | DC |
| Casey Askar for Congress | H | FL |
| Casey C. Campbell for Congress | H | TX |
| Casey Crane for Congress | H | NH |
| Casey Family Farms | I | MD |
| Casey Fetterman Victory Fund | N | DC |
| Casey for Congress | H | TN |
| Casey for Congress | H | RI |
| Casey for Congress | H | AL |
| Casey for Congress 2024 | H | MN |
| Casey for Senate | S | IL |
| Casey for US Senate | S | IL |
| Casey Gray for Congress | H | TX |
| Casey Groves for Congress | H | NY |
| Casey Keystone Victory Fund | N | PA |
| Casey, Richard James | I | AZ |
| Casey Slotkin Victory Fund | N | DC |
| Casey Wardynski Jfc | N | WI |
| Casey Wild 2018 | H | DC |
| Casey William Hardison for President, INC | P | WY |
| Casey William Hardison for Wyoming | H | WY |
| Casgraux for Congress | H | OR |
| Cash4ga | H | GA |
| Casha for Congress INC | H | NJ |
| Casha for Congress, INC. | H | NJ |
| Cash for President | P | IL |
| Cash for President 2028 | P | TX |
| Cashin for Mn | H | MN |
| Casper Campaign | H | UT |
| Casper for Colorado | H | CO |
| Casperson for Congress | H | MI |
| Cassandra for Congress | H | IL |
| Cass County Republican Central Committee | Y | IN |
| Cassidy & Associates, INC. Political Action Committee | N | DC |
| Cassidy Clausen 4 Congress | H | OR |
| Cassidy Leadership Fund | N | LA |
| Cassidy Victory 2020 | N | LA |
| Cassidy Victory Committee | N | LA |
| Cassius for Congress | H | TX |
| Cassy for Congress | H | TX |
| Cassy Victory Fund | N | OH |
| Castelli Victory Fund | N | DC |
| Casten for Congress | H | IL |
| Casten Victory Fund | N | DC |
| Cast for Congress | H | AZ |
| Castillo for Congress | H | FL |
| Castlepac LLC | Q | DE |
| Castorani for Congress | H | AL |
| Castor for Congress | H | FL |
| Castricone for Congress | H | NY |
| Castro for Congress | H | TX |
| Castro Senatorial Campaign Committee | S | TX |
| Castro Victory Fund | P | DC |
| Cast Your Vote USA | O | MN |
| Casual Conservatives of America | V | AZ |
| Casutt for Nevada | H | NV |
| Catala for Congress | H | TX |
| Catalent, INC. PAC | N | NJ |
| Catalina for Congress | H | IL |
| Catalina for Congress Committee | H | IL |
| Catalina Victory Fund | N | WI |
| Catalyst Democrats | N | CA |
| Catalyst for Change, INC. | N | VA |
| Catalyst Oklahoma | I | OK |
| Catalyst PAC | N | GA |
| Catapult PAC | N | WA |
| Catchthewave2018 | O | CA |
| Catella for Congress | H | IL |
| Caterpillar INC. Political Action Committee (Catpac) | Q | IL |
| Cates for Congress | H | GA |
| Catherine C Griggs | I | TX |
| Catherine Cortez-Masto for Senate | S | NV |
| Catherine Fleming Bruce for United States Senate | S | SC |
| Catherine for Congress | H | NY |
| Catherine Forsman for President | P | CA |
| Catherine Krantz for Congress | H | TX |
| Catherine Prato for Congress | H | NV |
| Catherine Templeton for Congress | H | SC |
| Catholic Advocate | I | DC |
| Catholics for the Future, INC. | O | DC |
| Catholics for the People | N | CA |
| Catholics for the President | O | DC |
| Catholics for Truth | O | IN |
| Catholicvote.Org | I | IL |
| Catholicvote.Org Candidate Fund | O | WI |
| Catholicvote.Org Political Action Committee | Q | WI |
| Cathy Bernstein for Congress | H | NY |
| Cathy Callow-Heusser for Congress | H | UT |
| Cathy for Congress | H | WI |
| Cathy McMorris Rodgers for Congress | H | WA |
| Cat Ping for Congress | H | IN |
| Causes to Believe in | O | SC |
| Cavaleri for Congress | H | WA |
| Cavalry PAC | V | CA |
| Cavanagh Senatorial Committee (Republican) | S | MD |
| Cavanaugh for Congress | H | AZ |
| Cavell for Congress | H | MA |
| Cavener for Congress LLC | H | OR |
| Ca Women for America | O | CA |
| Cawthorn for Nc | H | NC |
| Cawthorn Triumph Committee | N | DC |
| Cazel for Congress | H | VA |
| Cbc/Chc Victory Fund | N | DC |
| Cbc Companies INC PAC | Q | OH |