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.
Largest 100 Political Contributions (Week Ending January 2)
| Rank | Contributor | Committee | Amount | Date |
|---|---|---|---|---|
| 1 | Democratic Party of Wisconsin | Tony for Wisconsin | $500,000 | 12/30/2020 |
| 2 | Wisconsin Realtors Advocacy Fund | Wisconsin REALTORS Political Fund | $50,000 | 12/30/2020 |
| 3 | Deborah Lynn Kerr | Kerr for Wisconsin Kids | $20,000 | 12/31/2020 |
| 3 | Rick Cveykus | Rick Cveykus for Wisconsin | $20,000 | 12/29/2020 |
| 5 | Republican Party of Wisconsin | Jim Ott for Assembly | $19,306 | 12/28/2020 |
| 6 | Neil Kline | Friends of Neil Kline | $17,631 | 12/30/2020 |
| 7 | IBEW Local 494 PAC | Kaul for Attorney General | $15,000 | 12/31/2020 |
| 8 | Andrew J. Christenson | Christenson For Judge | $5,000 | 12/30/2020 |
| 8 | Forest Company Potawatomi Community PAC | Mandela for Wisconsin | $5,000 | 12/29/2020 |
| 8 | IBEW Local 494 PAC | Mandela for Wisconsin | $5,000 | 12/28/2020 |
| 8 | St. Croix County Republican Party | Taxpayers for Stafsholt | $5,000 | 12/31/2020 |
| 12 | Representative Assembly Campaign Com RACC | Rob Brooks For Assembly | $3,500 | 12/30/2020 |
| 13 | Kaul for Attorney General | Democratic Party of Wisconsin | $3,351 | 12/31/2020 |
| 14 | Cherie Link | Link For Senate | $3,210 | 12/31/2020 |
| 15 | BNSF RailPac | Assembly Democratic Camp Comm | $2,500 | 12/30/2020 |
| 15 | IBEW Local 494 PAC | Sarah for Wisconsin | $2,500 | 12/28/2020 |
| 17 | David Neville | Friends of Devin LeMahieu | $2,000 | 12/30/2020 |
| 17 | Hugh McLaughlin | Friends of Devin LeMahieu | $2,000 | 12/30/2020 |
| 17 | Neil Kline | Friends of Neil Kline | $2,000 | 12/30/2020 |
| 17 | Steven Immerman | Tony for Wisconsin | $2,000 | 12/31/2020 |
| 17 | WEC Energy Group PAC | Committee to Elect a Republican Senate | $2,000 | 12/30/2020 |
| 22 | Troy M. Gunderson | Troy for State Superintendent | $1,800 | 01/02/2021 |
| 23 | Daniel Stephen Diehn | Committee to Elect Dan Diehn | $1,500 | 12/29/2020 |
| 23 | Patrick English | Kerr for Wisconsin Kids | $1,500 | 12/28/2020 |
| 25 | James Marriott | Taxpayers for Stafsholt | $1,250 | 12/31/2020 |
| 26 | Representative Assembly Campaign Com RACC | Kurtz for Assembly | $1,057 | 12/28/2020 |
| 27 | Mark L. Thomsen | Sarah for Wisconsin | $1,039 | 12/31/2020 |
| 28 | Act Community/Rural Electrification | Friends of Julian Bradley | $1,000 | 12/30/2020 |
| 28 | Alliant Energy WI Gov Act Cte | Committee to Elect a Republican Senate | $1,000 | 12/28/2020 |
| 28 | Bob Vitt | State Senate Democratic Comm | $1,000 | 12/29/2020 |
| 28 | Charles Lauber | A. O. Smith Political Action | $1,000 | 12/31/2020 |
| 28 | Concerned Realtors Committee | Allen for Wisconsin | $1,000 | 12/30/2020 |
| 28 | Concerned Realtors Committee | Kunesh for Assembly | $1,000 | 12/31/2020 |
| 28 | Fonepac | Committee to Elect a Republican Senate | $1,000 | 12/28/2020 |
| 28 | Friends of Alberta Darling | Kerr for Wisconsin Kids | $1,000 | 12/29/2020 |
| 28 | Gail Gonzales | Kaul for Attorney General | $1,000 | 12/31/2020 |
| 28 | Hugh McLaughlin | Taxpayers for John Jagler | $1,000 | 12/28/2020 |
| 28 | James C. Jarocki | Taxpayers for John Jagler | $1,000 | 12/28/2020 |
| 28 | James H. Gallegos | Kaul for Attorney General | $1,000 | 12/31/2020 |
| 28 | James Hoffman | Taxpayers for Stafsholt | $1,000 | 12/31/2020 |
| 28 | Jon Thingvold | Taxpayers for Marklein | $1,000 | 12/30/2020 |
| 28 | Kathy Wilson | Kerr for Wisconsin Kids | $1,000 | 12/31/2020 |
| 28 | Kyle Weatherly | Sarah for Wisconsin | $1,000 | 12/30/2020 |
| 28 | Metro Milw Association of Commerce | Citizens for Dale Kooyenga | $1,000 | 12/28/2020 |
| 28 | Noah Blum | Friends of Devin LeMahieu | $1,000 | 12/30/2020 |
| 28 | Professional Firefighters of WI PAC | Friends & Neighbors of Robin Vos | $1,000 | 12/30/2020 |
| 28 | REALTORS Political Action Committee - Wisconsin | Kunesh for Assembly | $1,000 | 12/31/2020 |
| 28 | Rob Cadwallader | Clint Moses for WI 29th | $1,000 | 12/30/2020 |
| 28 | Robert Molitor | WHCA-WiCAL PAC | $1,000 | 12/29/2020 |
| 28 | Scott Fitzgerald for Senate | Taxpayers for John Jagler | $1,000 | 12/31/2020 |
| 28 | WI Bankers Association PAC | Taxpayers for John Jagler | $1,000 | 12/28/2020 |
| 28 | WI Bankers Association PAC | Citizens for Horlacher | $1,000 | 12/28/2020 |
| 28 | WI Cable, PAC | Taxpayers for John Jagler | $1,000 | 12/28/2020 |
| 28 | WI Cable, PAC | Committee to Elect a Republican Senate | $1,000 | 12/31/2020 |
| 28 | WI Dental Association PAC | Committee to Elect a Republican Senate | $1,000 | 12/30/2020 |
| 28 | Wia, PAC | Taxpayers for John Jagler | $1,000 | 12/28/2020 |
| 28 | Wisconsin Physical Therapy | Committee to Elect a Republican Senate | $1,000 | 12/30/2020 |
| 28 | Yates French | Lavey for Judge | $1,000 | 01/02/2021 |
| 59 | Fred Schroeckenthaler | Tony for Wisconsin | $750 | 12/31/2020 |
| 59 | Jane Schumann | Friends & Neighbors of Robin Vos | $750 | 12/30/2020 |
| 61 | Staush Gruszynski | Friends of Staush Gruszynski | $708 | 12/30/2020 |
| 62 | Assembly Democratic Camp Community | Democratic Party of Wisconsin | $692 | 12/31/2020 |
| 63 | Joshua Greene | A. O. Smith Political Action | $667 | 12/31/2020 |
| 64 | Wisconsin Dental Association | WI Dental Assn PAC | $635 | 12/29/2020 |
| 65 | Jane Bucher | Jane for Judge | $575 | 12/31/2020 |
| 66 | Linda Frank | Sarah for Wisconsin | $539 | 12/30/2020 |
| 66 | Mary Lang Sollinger | Sarah for Wisconsin | $539 | 12/30/2020 |
| 66 | Mary Sensenbrenner | Sarah for Wisconsin | $539 | 12/30/2020 |
| 69 | Adel B. Korkor | Kaul for Attorney General | $500 | 12/28/2020 |
| 69 | Amy Heart | Kegel for Judge | $500 | 12/31/2020 |
| 69 | Barbara Griffin | Republican Party of Kenosha County | $500 | 12/30/2020 |
| 69 | Bonnie Joseph | Grassroots North Shore | $500 | 12/31/2020 |
| 69 | Carl R. Johnson | Kaul for Attorney General | $500 | 12/27/2020 |
| 69 | Charles C. Dubois | Taxpayers for John Jagler | $500 | 12/28/2020 |
| 69 | Danny Beard | Clint Moses for WI 29th | $500 | 12/30/2020 |
| 69 | David Chisolm | A. O. Smith Political Action | $500 | 12/31/2020 |
| 69 | David Gustitus | Clint Moses for WI 29th | $500 | 12/30/2020 |
| 69 | Elaine Burke | Kegel for Judge | $500 | 12/30/2020 |
| 69 | Felicia Houk | Clint Moses for WI 29th | $500 | 12/30/2020 |
| 69 | Festival Foods, PAC | Citizens for Dale Kooyenga | $500 | 12/30/2020 |
| 69 | Greg Kretz | Republican Party of Langlade County | $500 | 12/28/2020 |
| 69 | Janet Luty | Taxpayers for Stafsholt | $500 | 12/31/2020 |
| 69 | Kathleen Shoemaker | Tricia Walker for Judge | $500 | 12/29/2020 |
| 69 | Kevin Blau | Clint Moses for WI 29th | $500 | 12/30/2020 |
| 69 | Lana Mohs | Kunesh for Assembly | $500 | 12/31/2020 |
| 69 | Lisa Washa | Committee to Elect a Republican Senate | $500 | 12/31/2020 |
| 69 | Margery Chapman | Kunesh for Assembly | $500 | 12/31/2020 |
| 69 | Milwaukee Professional Firefighters Local 215 | Citizens for Horlacher | $500 | 12/28/2020 |
| 69 | Myrna Toney | Tony for Wisconsin | $500 | 12/31/2020 |
| 69 | Noah Blum | Taxpayers for John Jagler | $500 | 12/28/2020 |
| 69 | Randy Bunnell | Committee to Elect a Republican Senate | $500 | 12/31/2020 |
| 69 | Ron Torrey | Democratic Party of Walworth County | $500 | 12/31/2020 |
| 69 | Scott A. Kopp | Friends Of Debbie Jacques | $500 | 01/02/2021 |
| 69 | Thomas D. Larson | Kunesh for Assembly | $500 | 12/31/2020 |
| 69 | Thomas Springer | Jon Erpenbach Senate Committee | $500 | 12/30/2020 |
| 69 | United Health Group Incorporated, PAC | Taxpayers for Marklein | $500 | 12/30/2020 |
| 69 | UnitedHealth Group Inc. PAC | Friends of Devin LeMahieu | $500 | 12/30/2020 |
| 69 | UnitedHealth Group, PAC | Born For Assembly | $500 | 12/31/2020 |
| 69 | Wisconsin Physical Therapy | Taxpayers for John Jagler | $500 | 12/31/2020 |
| 100 | Darrell Schuh | A. O. Smith Political Action | $400 | 12/31/2020 |
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