| Cornyn-Perdue Victory Fund | S | DC |
| Cornyn Sullivan 2020 | N | VA |
| Cornyn Victory Committee | N | TX |
| Corpus Juris Civilis Bce Corp Pmc Committee | S | CA |
| Correct the Record | V | DC |
| Corridor 67, INC Political Action Committee - PAC 67 | Q | IL |
| Corrigan4senate 24 | S | WI |
| Corrigan for Senate 24 | S | WI |
| Corrine Brown for Congress | H | FL |
| Corteva, INC. Employees PAC (Corteva Agriscience Pac) | Q | DC |
| Cortez Masto, Hassan, Murray Victory Fund | N | VA |
| Cortez Masto Victory 2022 | N | DC |
| Cortez Masto Victory Fund | N | DC |
| Cortez Masto Victory Fund | N | DC |
| Cortney4congress | H | WA |
| Cort Vanostran for Congress | H | MO |
| Cort Vanostran Victory Fund | N | MO |
| Corvi for Congress | H | RI |
| Cory 2020 | P | DC |
| Cory Booker for Senate | S | NJ |
| Cory for Colorado | N | VA |
| Cory Gardner for Senate | S | CO |
| Cory Mills for Congress | H | FL |
| CO Senate Republican Nominee Fund 2026 | N | AL |
| CO Senate Republican Nominee Victory Fund | N | VA |
| Cosme/Streeper | P | OK |
| Cosner for Congress | H | WV |
| Coson4senate | S | MN |
| Costa for Senate | S | RI |
| Costello for Congress | H | PA |
| Costello for Congress Committee | H | IL |
| Costello for President, INC. | P | WA |
| Costello for Senate | S | ME |
| Cotham for Congress | H | NC |
| Cotiviti Corporation Political Action Committee (Cotiviti Pac) | Q | CT |
| Cotney Attorneys & Consultants PAC | N | FL |
| Cotney Construction PAC | N | FL |
| Cotton for Senate, INC. | S | AR |
| Cotton Growers of Virginia (Cgva) | N | VA |
| Cotton Majority Committee | N | VA |
| Cotton Senate Victory 2022 | N | VA |
| Cotton Victory | N | VA |
| Coughlin for Congress | H | OH |
| Coughlin for Congress-Gtm Nf Oh13 | H | VA |
| Coughlin for Oh-13 Republican Nominee Fund 2024 | H | VA |
| Coughlin Victory Committee | N | OH |
| Council for Affordable and Rural Housing PAC INC (Carh Pac) | Q | VA |
| Council for A Livable World Candidate Fund | Q | DC |
| Council for American Competitiveness | O | NM |
| Council for Citizens Against Government Waste | I | DC |
| Council for Citizens Against Government Waste Political Action Committee (Ccagw Pac) | Q | DC |
| Council for Responsible Government | I | VA |
| Council for Responsible Nutrition Political Action Committee | Q | DC |
| Council Oak Civic Association | N | MA |
| Council of Cosmic Clearance | U | CO |
| Council of New Jersey Chiropractors PAC | N | NJ |
| Council of Producers and Distributors of Agrotechnology (Cpda-Pac) | Q | DC |
| Council of School Supervisors and Administrators Local 1 Afsa Afl-Cio | Q | NY |
| Council on American Liberalism | O | IL |
| Council on American Security, INC. | O | AR |
| Counteract | O | GA |
| Counter Coalition | V | CA |
| Counterpoint USA | O | AZ |
| Count Me in to Win Action | V | MA |
| Count on Me PAC | O | MD |
| Country Above Party PAC | O | MD |
| Country Community Honor | O | CA |
| Country First | N | IL |
| Country First Political Action Committee, INC. (Country First Pac) | Q | NC |
| Country Over Party PAC | O | WY |
| Country Roads PAC | Q | WV |
| Count the Vote | O | CA |
| Coupang, INC. Company PAC (Coupac) | N | DC |
| Courage California Super PAC | O | CA |
| Courage for Progress | O | IL |
| Courage Maine | O | ME |
| Courage Maine | O | VA |
| Courageous Conservatives PAC | O | NJ |
| Courageous Leaders | N | DC |
| Courageous Leadership Now PAC | V | NE |
| Courageous Leaders PAC, INC. | O | DC |
| Courage PAC | N | VT |
| Courage to Act | N | WI |
| Courage to Change | Q | NY |
| Courier Plus, INC. D/B/A Dutchie Political Action Committee | N | CA |
| Courtland Sykes for Senate | S | MO |
| Courtney for Congress | H | CT |
| Courtney for Congress | H | TN |
| Courtney Geels for Congress | H | NC |
| Courtney Lackey for Congress | H | CA |
| Courtney Victory Fund | N | DC |
| Covanta Energy LLC Political Action Committee (Covanta Pac) | Q | NJ |
| Covell for Congress 2022 | H | CA |
| Covert for Congress | H | SC |
| Covestropac A Political Action Committee of Covestro LLC | N | PA |
| Covington and Burling LLP PAC | Q | DC |
| Cowan for Congress, INC. | H | GA |
| Cowboy Conservatives Fund | O | WI |
| Cowboy Logic PAC | V | WV |
| Cowboy PAC | Q | VA |
| Cowboy Victory Committee | N | VA |
| Cowboy Victory Committee II | N | VA |
| Cowden Safta Victory Fund | H | NC |
| Cowen for Congress | H | GA |
| Cow PAC | V | DC |
| Cox Enterprises PAC (Coxpac) INC. | Q | DC |
| Coyote PAC | Q | DC |
| Cozen O'Connor Political Action Committee | Q | PA |
| Cozzens for Congress | H | NH |
| Cp4t | N | TX |
| Cpac | O | CT |
| Crafts for Me-02 | H | MD |
| Craig Alan Woolcott Political Advisor Coalition Committee | P | MD |
| Craig Bowden for Senate | S | UT |
| Craig Budzinski Victory Fund | H | DC |
| Craig Elliot Raybon | H | MS |
| Craig for Congress | H | NY |
| Craig Goldman for Congress | H | TX |
| Craig James for United States Senate | S | TX |
| Craig Morton for Illinois | H | IL |
| Craig Olson for Congress | H | ME |
| Craig Riedel for Ohio | H | OH |
| Craig Smith 4 Senate | S | DC |
| Craig Snyder for Senate | S | PA |
| Craig Walker for Congress | H | TX |
| Craig Wildenradt for District 5 | H | TN |
| Cramer for Senate | S | ND |
| Cramer-Hawley Victory Fund | N | VA |
| Cramer Victory Fund | N | VA |
| Crane for Az-02 | H | MD |
| Crane for Az-02 Republican Nominee Fund 2022 | H | VA |
| Crane for Congress | H | GA |
| Crane for Congress | H | GA |
| Crane for Congress INC | H | GA |
| Crank Victory Fund | N | CO |
| Crapo Victory Committee | N | VA |
| Cravens for Kentucky | H | KY |
| Crawford for Congress | H | AR |
| Crawford Murphy & Tilly INC PAC | N | IL |
| Craya Caron for U.S. House of Representatives 8th District | H | CA |
| Cray INC Employee Political Action Committee (Aka Cray Pac) | Q | VA |
| Crazy William Farms | P | OH |
| Create Change Now | V | IA |
| Creating A Majority Party Action Committee (C.A.M.P.A.C.) | H | MI |
| Creating A Secure Economy PAC | N | WI |
| Creating Opportunities, Markets and Enthusiam in Rural Kentucky PAC | Q | VA |
| Creative Arts PAC | N | NY |
| Creative Majority Political Action Committee | O | MD |
| Creatives for | O | CA |
| Creators PAC | O | CA |
| Credit Suisse Securities (Usa) LLC Political Action Committee | Q | DC |
| Credit Union National Association | C | DC |
| Cree INC PAC (Cree Pac) | N | NC |
| Crescent River Port Pilots Association Federal Political Action Committee/Crppa Fed PAC | Q | LA |
| Cresent Hardy for Congress 2022 | H | NV |
| Cres PAC | W | DC |
| Crestwood Corporation Political Action Committee Crestwood PAC | N | TX |
| Crg Network PAC | I | WI |
| Crh Americas, INC. PAC | Q | DC |
| Crime Survivors PAC | V | CA |
| Crimson Democratic Alliance | N | MA |
| Crimson Democrats PAC | N | MA |
| Crimson Goes Blue, INC. | V | MA |
| Cris Dosev for Congress | H | FL |
| Crispi for Congress | H | NJ |
| Crist4congress | H | OH |
| Crist for Congress | H | OH |
| Cristiani for Congress | H | FL |
| Cristina for Texas | S | TX |
| Cristina Garcia for Congress | H | CA |
| Cristina McNeil for Congress | H | ID |
| Cristos Goodrow for Congress 2020 | H | CA |
| Crist Victory Fund | N | DC |
| Critical Majority | O | CA |
| Critical Mission Solutions PAC of Amentum Holdings INC. | N | VA |
| Crochetiere for Congress | H | NH |
| Crockett-Lee Victory Fund | H | DC |
| Cronos USA Holdings INC. Political Action Committee (Cronos Employees Pac) | N | DC |
| Crop Insurance Professionals Association PAC-Cipa PAC | Q | DC |
| Crop Insurance Reinsurance Bureau (Cirb)-PAC | Q | DC |
| Croplife America Political Action Committee | Q | DC |
| Crosby for Congress | H | OH |
| Crossed Rifles PAC | N | WV |
| Crosspartisan PAC I | Q | VA |
| Crosspartisan PAC II | Q | VA |
| Crossstate Credit Union Association Political Action Committee | Q | PA |
| Cross the Aisle for America | O | ID |
| Crow4senate | S | KS |
| Crowell & Moring LLP Political Action Committee (C&M Pac) | Q | DC |
| Crowe PAC | Q | IN |
| Crowley for Congress | H | DC |
| Crowley Maritime Corporation Federal PAC | Q | FL |
| Crowl for Congress | H | IL |
| Crown Cork & Seal Company INC. PAC | Q | PA |
| Crow/Neguse Victory Fund | H | DC |
| Crow Victory Fund | N | DC |
| Cruise for Cancun | O | DC |
| Cruise Lines International Association PAC (Clia Pac) | Q | DC |
| Crumpacker for Congress | H | OR |
| Crumpacker for Congress | H | OR |