Donations made to political groups or candidates must be disclosed under state law for greater transparency in elections. While Congress created the Federal Election Commission to oversee federal elections in 1974, each state is left to regulate its local elections.
Top committees ranked by total contributions (May)
| Rank | Committee | Amount | Median contribution amount |
|---|---|---|---|
| 1 | Tony for Wisconsin | $2,623,207 | $20 |
| 2 | Democratic Party of Wisconsin | $2,445,460 | $25 |
| 3 | People for Rebecca | $626,419 | $35 |
| 4 | Friends Of Steve Doyle | $504,848 | $50 |
| 5 | SEIU Wisconsin State Council Independent Expenditure Committee | $310,000 | $80,000 |
| 6 | Kaul for Attorney General | $169,365 | $30 |
| 7 | Republican Party of Wisconsin | $109,462 | $100 |
| 8 | Friends of Rachael Cabral Guevara | $106,510 | $125 |
| 9 | Assembly Democratic Campaign Committee | $87,278 | $50 |
| 10 | Committee to Elect a Republican Senate | $84,030 | $4,000 |
| 11 | Jarchow for Wisconsin | $65,570 | $65 |
| 12 | State Senate Democratic Committee | $65,193 | $25 |
| 13 | Roth For Wisconsin | $31,808 | $30 |
| 14 | Together With Jeff Smith | $30,255 | $50 |
| 15 | Duey for Senate | $26,450 | $250 |
| 16 | Ramthun For Assembly | $23,544 | $50 |
| 17 | Democratic Party of Jefferson County | $22,866 | $189 |
| 18 | Taxpayers for Stafsholt | $22,582 | $500 |
| 19 | Wisconsin Credit Union Legislative Action Fund | $18,777 | $2 |
| 20 | Wisconsin Pipe Trades Assn PAC | $17,344 | $3 |
| 21 | WHCA-WiCAL PAC | $16,710 | $100 |
| 22 | FONEPAC | $16,302 | $20 |
| 23 | Friends of Julian Bradley | $14,324 | $100 |
| 24 | Friends of Devin LeMahieu | $14,215 | $50 |
| 25 | 8th Congressional District Democratic Party | $13,987 | $35 |
| 26 | Steffen for Wisconsin | $13,270 | $150 |
| 27 | Wisconsin Bankers Association PAC | $13,150 | $500 |
| 28 | Friends of Dianne Hesselbein | $12,812 | $100 |
| 29 | Taxpayers for Marklein | $12,765 | $100 |
| 30 | Wisconsin Laborers District Council | $12,647 | $2 |
| 31 | Quinn for Assembly | $12,626 | $50 |
| 32 | Tip for WI | $12,564 | $150 |
| 33 | Friends of Sara Rodriguez For Wisconsin | $11,995 | $30 |
| 34 | Volunteers for Agriculture VFA | $11,415 | $10 |
| 35 | Friends of Katrina Shankland | $11,387 | $100 |
| 36 | LeadingAge WI PAC | $11,064 | $100 |
| 37 | Friends of Greta Neubauer | $11,025 | $125 |
| 38 | Republican Party of Marathon County | $10,995 | $40 |
| 39 | Friends of Deb Andraca | $10,349 | $100 |
| 40 | Democratic Party of Brown County | $10,255 | $25 |
| 41 | Nancy for Wisconsin | $10,220 | $88 |
| 42 | Wisconsin Working Families Party PAC | $10,168 | $4 |
| 43 | Goyke For Assembly | $9,525 | $100 |
| 44 | Republican Party of Brown Co | $9,493 | $200 |
| 45 | Friends of Melissa Sargent | $9,316 | $75 |
| 46 | Petersen- Republican for 40th Assembly | $9,155 | $100 |
| 47 | Friends of Mark Spreitzer | $8,844 | $50 |
| 48 | WI Soc Anesthesiologists PAC | $8,604 | $100 |
| 49 | Friends & Neighbors of Robin Vos | $8,355 | $50 |
| 50 | Billings for Assembly | $8,082 | $50 |
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