| Battlefield Expansion Project | V | VA |
| Battlefield Fund 2023 | S | VA |
| Battle for America PAC | V | TN |
| Battle for the Brain | O | CA |
| Battle for the Soul of Amercia Super PAC | O | DC |
| Battlefront Blue | V | PA |
| Battleground24 | O | MA |
| Battleground America | V | MS |
| Battleground Arizona | N | DC |
| Battleground California | O | CA |
| Battleground Democrats | O | DC |
| Battleground Freedom | V | WI |
| Battleground Georgia | O | GA |
| Battleground Georgia Fund | N | DC |
| Battleground Iowa 2020 | H | IA |
| Battleground Kentucky | N | KY |
| Battleground Michigan | H | DC |
| Battleground Minnesota | H | MN |
| Battleground New York | O | DC |
| Battleground PAC | Q | NC |
| Battleground South | N | DC |
| Battleground States 2020 | N | KY |
| Battlegrounds United | N | NV |
| Battleground Texas | O | TX |
| Battleground Victory 2020 | S | DC |
| Battleground Victory 2024 | N | TX |
| Battleground Votes | O | WI |
| Battleground Women 2020 | H | DC |
| Battleground Women of Wa | H | WA |
| Battleground Working Women Group DC Victory Fund (BWWG DC) | H | NC |
| Battle PAC | N | WV |
| Battle PAC | O | UT |
| Battle PAC | O | DC |
| Battle Ready PAC | O | OK |
| Baucom for Congress | H | NC |
| Baugh for Ca-47 | H | MD |
| Baugh for Congress | H | CA |
| Baugh Victory Fund | N | CA |
| Baxter for Congress | H | NH |
| Baxter for Congress | H | OH |
| Baxter Healthcare Corporation Political Action Committee | Q | DC |
| Baxter Lee for Congress | H | TN |
| Bayada Hearts for Home Care, Inc. Political Action Committee | N | PA |
| Bayada Home Health Care, Inc. Political Action Committee (A.k.a. Bayada U.S. PAC) | Q | PA |
| Bay Blue PAC | O | TX |
| Baycare Physicians PAC | Q | WI |
| Bay County Democratic Executive Committee | X | FL |
| Bay County Republican Party Committee | X | MI |
| Bayer Corporation Crop Science Employees Citizenship Fund (Bayer Crop Science Fund) | Q | MO |
| Bayer U.S. LLC Political Action Committee | Q | DC |
| B Brigade Majority Fund | N | MI |
| Bbva USA Bancshares, Inc. PAC | Q | AL |
| BBVF | N | CA |
| Bce Corporation PMC | S | CA |
| B C United | H | DC |
| Beach Cities Democrats - Federal | N | CA |
| Beaches Environmental Action Committee (for) Hospitality | O | FL |
| Beach for Congress | H | GA |
| Be a Hero PAC | W | DC |
| Beale for Congress | H | IL |
| Beall's PAC USA | Q | FL |
| Beam on Progress | O | NY |
| Beam Suntory Inc Political Action Committee | Q | DC |
| Be an American PAC | N | FL |
| Bean for FL-04 | H | MD |
| Bearded Entrepreneurs for the Advancement of a Responsible Democracy | O | MO |
| Bear for U.S. Congress | H | ME |
| Beasley Demings Victory Fund | N | DC |
| Beasley Kelly Victory Fund | N | DC |
| Beasley Victory Fund | N | DC |
| Beasley Warnock Victory Fund | N | DC |
| Beat Bernie 2020 | O | DC |
| Beat Obama Political Action Committee | U | CA |
| Beatriz Reynoso for Congress | H | TX |
| Beat the Odds PAC | N | NV |
| Beatty for Congress | H | OH |
| Beatty Gottheimer Victory Fund | H | DC |
| Beau for Congress | H | NJ |
| Beau for Congress | H | WI |
| Beau for President | P | NY |
| Beau for President 2020 | P | NY |
| Beau for President 2024 | P | NY |
| Beaumont for Congress Committee | H | NC |
| Beautiful America | O | WI |
| Beautiful America PAC | O | WI |
| Beaver County Democratic Committee | X | PA |
| Beaver for Congress | H | AZ |
| Beazer Homes USA Inc Political Action Committee (Beazer Homes PAC) | N | GA |
| Be Better America PAC | N | PA |
| Becauseamerica | U | TX |
| Because I Care Political Action Committee (Bicpac) | Q | FL |
| Becca Balint for Vermont | H | VT |
| Becchi for Congress | H | NJ |
| Becchi for NJ-11 | H | MD |
| Becerra for Congress | H | CA |
| Be Change Now | E | HI |
| Bech Bruun for Congress | H | TX |
| Bechtel Group, Inc. Political Action Committee (Bechtel Political Action Committee) | Q | AZ |
| Beck 4 Indiana | H | IN |
| Becker for Congress | H | NV |
| Becker for Congress | H | FL |
| Becker for Congress | H | NY |
| Becker for NV-03 | H | MD |
| Becker for NV-03 Republican Nominee Fund 2022 | H | VA |
| Becker Nevada Fund | N | NV |
| Becker Victory Committee | N | NV |
| Beck for President | P | CA |
| Beckwith for Congress | H | IN |
| Becky Edwards for Congress | H | VA |
| Becky Edwards for US Senate | S | VA |
| Becky E. Hites for Congress 2022 | H | FL |
| Becky E. Hites for Congress Committee | H | GA |
| Becky Grossman for Congress | H | MA |
| Becky Whitley for Congress | H | NH |
| Be Counted | I | OH |
| Becton Dickinson and Company PAC | Q | NJ |
| Bedell for Congress | H | VA |
| Bedell for Virginia | H | VA |
| Beebe for Oregon | S | OR |
| Beebe for US Representative | H | OR |
| Beef-PAC (Beef Political Action Committee of Texas Cattle Feeders Association) | Q | TX |
| Beehive PAC | O | WI |
| Beehive Values PAC | O | UT |
| Beeler4congress | H | WA |
| Beeman for Congress | H | PA |
| Beer Hall Project | O | DC |
| Beer Institute PAC (Beer PAC) | N | DC |
| Be for Innovation Promotion PAC (B4ip PAC) | N | DC |
| Begich for Ak-Al Republican Nominee Fund 2024 | H | VA |
| Begin for 31St | S | CT |
| Be Great Together | V | CT |
| Behar for America | H | NY |
| Beheard PAC | V | MO |
| Beigene USA Inc. Political Action Committee | N | DC |
| Beige Rainbow PAC | V | DC |
| Be Kind to Animals by Judah B. Wilson | P | IN |
| Belief in Action | N | VA |
| Belief in Life and Liberty Political Action Committee (Bill's PAC) | Q | OH |
| Believe in America PAC | Q | MA |
| Believe in Indiana | I | IN |
| Believe in Life Liberty Yourself (Billy PAC) | N | MO |
| Believe in Service | N | TN |
| Believe in Utah Joint Fundraising Committee | N | MA |
| Belinda Fox-Spencer for Congress | H | WV |
| Bell 2020 for Oh-12 | H | OH |
| Bell Ambulance, Inc. Employees PAC | N | WI |
| Bellformissouri | H | MO |
| Bell for Senate | S | NJ |
| Bellingham for Congress | H | CA |
| Bellows for Senate | S | ME |
| Bellpac | N | DC |
| Belnome for Congress | H | NJ |
| Belsito for Congress | H | MA |
| Beltway PAC | I | VA |
| Belzer for Change | H | LA |
| Benancio Garcia Iii - US Congress | H | WA |
| Ben Aybar | N | MI |
| Ben Bateman for Congress | H | NM |
| Ben Beardsley for Congress | H | MD |
| Ben Boren for Congress | H | MI |
| Ben Bullock for Congress | H | GA |
| Ben Cardin for Senate | S | MD |
| Ben Chandler for Congress | H | KY |
| Bench Builders 2024 | N | DC |
| Ben Clark for Congress | H | NC |
| Ben Cline for Congress | H | VA |
| Benda for Congress | H | MN |
| Bendar for Congress NJ CD-4 | H | NJ |
| Bendavid2020 | S | WY |
| Ben David Victory Fund | N | DC |
| Ben Davis Is Not a Politician | S | UT |
| Ben Dewell for Congress | H | CA |
| Ben Diamond for Congress | H | FL |
| Bend the Arc Jewish Action | I | NY |
| Bend the Arc Jewish Action | C | NY |
| Bend the Arc Jewish Action Inc. PAC | Q | DC |
| Ben E Keith Company Federal PAC | N | TX |
| Ben Emard for Congress | H | CA |
| Ben Everidge for Florida | S | FL |
| Benfer for Congress | H | NJ |
| Ben Garves for Congress - Texas 25Th | H | TX |
| Ben Gibson for Congress | H | LA |
| Bengochea Exploratory Committee | H | FL |
| Benine for Congress | H | NY |
| Benine Victory Committee | N | NY |
| Benito Bernal for Congress 2024 | H | CA |
| Benjamin for Congress | H | TX |
| Benjamin Franklin Institute | O | FL |
| Benjamin Holcomb 4 Congress | H | MO |
| Benjamin Weislogel for Congress | H | OH |
| Ben Leyva Committee | P | TX |
| Ben Loyola for Congress | H | VA |
| Ben Nelson 2012 | S | NE |
| Bennet Blumenthal Victory Fund | S | DC |
| Bennet Booker Hickenlooper Victory Fund | S | DC |
| Bennet Caraveo Victory Fund | S | DC |
| Bennet Colorado Victory | N | CO |
| Bennet Colorado Victory Fund | N | DC |
| Bennet Crow Victory Fund | S | CO |
| Bennet for America | P | CO |