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 August 14)
| Rank | Contributor | Committee | Amount | Date |
|---|---|---|---|---|
| 1 | Florida Democratic Party | Democratic Party of Wisconsin | $50,000 | 08/10/2021 |
| 2 | Tony for Wisconsin | $20,000 | 08/11/2021 | |
| 2 | John Wolthuis | Tony for Wisconsin | $20,000 | 08/11/2021 |
| 2 | Justine Haselow | Tony for Wisconsin | $20,000 | 08/11/2021 |
| 5 | REALTORS Political Action Committee - Wisconsin | Tony for Wisconsin | $15,000 | 08/13/2021 |
| 6 | Tony for Wisconsin | $10,000 | 08/11/2021 | |
| 7 | Centene Corporation, PAC | Committee to Elect a Republican Senate | $6,000 | 08/10/2021 |
| 8 | Barbara Johnson | Barron County Republican Party | $5,000 | 08/12/2021 |
| 8 | Greg Marcus | Tony for Wisconsin | $5,000 | 08/12/2021 |
| 10 | Tony for Wisconsin | $4,750 | 08/09/2021 | |
| 11 | Lebakkens | Committee to Elect a Republican Senate | $4,000 | 08/10/2021 |
| 11 | Outdoor Advertising Association of Wisconsin | Committee to Elect a Republican Senate | $4,000 | 08/10/2021 |
| 13 | Northwestern Mutual PAC | $3,986 | 08/12/2021 | |
| 14 | Scott Lauber | WEC Energy Group PAC (WEC PAC) | $3,000 | 08/13/2021 |
| 15 | Robert M. Garvin | WEC Energy Group PAC (WEC PAC) | $2,125 | 08/13/2021 |
| 16 | Helene Nelson | Tony for Wisconsin | $2,000 | 08/08/2021 |
| 16 | Mary Straka | WEC Energy Group PAC (WEC PAC) | $2,000 | 08/13/2021 |
| 18 | Friends of Devin LeMahieu | $1,500 | 08/13/2021 | |
| 18 | WEC Energy Group PAC (WEC PAC) | $1,500 | 08/13/2021 | |
| 18 | Daniel P. Krueger | WEC Energy Group PAC (WEC PAC) | $1,500 | 08/13/2021 |
| 18 | Kelly Elkins | Wisconsin Hospitals PAC | $1,500 | 08/10/2021 |
| 22 | Jacque for Senate | Committee to Elect a Republican Senate | $1,208 | 08/10/2021 |
| 23 | Mullane Elizabeth D. Stueck | WEC Energy Group PAC (WEC PAC) | $1,083 | 08/13/2021 |
| 24 | Joseph K. Fletcher | WEC Energy Group PAC (WEC PAC) | $1,013 | 08/13/2021 |
| 25 | Tony for Wisconsin | $1,000 | 08/08/2021 | |
| 25 | Taylor Co Democratic Party | $1,000 | 08/10/2021 | |
| 25 | Tony for Wisconsin | $1,000 | 08/11/2021 | |
| 25 | Friends & Neighbors of Robin Vos | $1,000 | 08/11/2021 | |
| 25 | Republican Party of Brown Co | $1,000 | 08/12/2021 | |
| 25 | Tony for Wisconsin | $1,000 | 08/13/2021 | |
| 25 | Taxpayers for Kapenga | $1,000 | 08/14/2021 | |
| 25 | Al Musa | Citizens for Sylvia Ortiz-Velez | $1,000 | 08/10/2021 |
| 25 | Bennet Yee | Tony for Wisconsin | $1,000 | 08/11/2021 |
| 25 | Bonnie O'Leske | Tony for Wisconsin | $1,000 | 08/11/2021 |
| 25 | Centene Corporation, PAC | Citizens for Dale Kooyenga | $1,000 | 08/09/2021 |
| 25 | Centene Corporation, PAC | Taxpayers for Marklein | $1,000 | 08/09/2021 |
| 25 | Centene Corporation, PAC | Friends of Devin LeMahieu | $1,000 | 08/09/2021 |
| 25 | Christine Berg | Tony for Wisconsin | $1,000 | 08/11/2021 |
| 25 | Dairy Business Association, Inc. | Assembly Democratic Camp Comm | $1,000 | 08/09/2021 |
| 25 | Jacqueline Boynton | Tony for Wisconsin | $1,000 | 08/11/2021 |
| 25 | Jeffrey Davis | Tony for Wisconsin | $1,000 | 08/11/2021 |
| 25 | Jesse Dvorachek | Dairy PAC | $1,000 | 08/10/2021 |
| 25 | Joseph Zgonc | WEC Energy Group PAC (WEC PAC) | $1,000 | 08/13/2021 |
| 25 | Julilly Kohler | Tony for Wisconsin | $1,000 | 08/08/2021 |
| 25 | Linda Benfield | Tony for Wisconsin | $1,000 | 08/11/2021 |
| 25 | Local 400 COPE Fund | Tony for Wisconsin | $1,000 | 08/09/2021 |
| 25 | Mary Nikolay | Tony for Wisconsin | $1,000 | 08/09/2021 |
| 25 | Professional Insurance Agents PAC | Friends of Mary | $1,000 | 08/10/2021 |
| 25 | Richard Uihlein | Friends of Mary | $1,000 | 08/10/2021 |
| 25 | Robert Spoerl | Testin for Senate | $1,000 | 08/09/2021 |
| 25 | S. C. Johnson & Son, Inc. | Assembly Democratic Camp Comm | $1,000 | 08/13/2021 |
| 25 | School Johnson & Son Inc. Political Action Committee | State Senate Democratic Comm | $1,000 | 08/11/2021 |
| 25 | Thomas Koser | Barron County Republican Party | $1,000 | 08/12/2021 |
| 25 | Tomas Torres | Tony for Wisconsin | $1,000 | 08/08/2021 |
| 25 | Wisconsin Funeral Directors Association | Assembly Democratic Camp Comm | $1,000 | 08/09/2021 |
| 25 | Wisconsin Health Care Association, PAC | Assembly Democratic Camp Comm | $1,000 | 08/09/2021 |
| 57 | Kristina for Assembly | Assembly Democratic Camp Comm | $900 | 08/09/2021 |
| 58 | Friends of Devin LeMahieu | $750 | 08/09/2021 | |
| 58 | Building A Better WI | Friends of Devin LeMahieu | $750 | 08/09/2021 |
| 58 | UAW WI State PAC | State Senate Democratic Comm | $750 | 08/11/2021 |
| 61 | Nancy 4 Wisconsin | $660 | 08/09/2021 | |
| 62 | Tom Walker | Jackson County Democratic Party | $646 | 08/11/2021 |
| 63 | AFT Wisconsin COPE | American Fed of Teachers #212 COPE | $600 | 08/11/2021 |
| 64 | Theodore Eidukas | WEC Energy Group PAC (WEC PAC) | $575 | 08/13/2021 |
| 65 | Molly Mulroy | WEC Energy Group PAC (WEC PAC) | $550 | 08/13/2021 |
| 66 | Friends of Melissa Agard | $535 | 08/12/2021 | |
| 67 | Kyle Hoops | WEC Energy Group PAC (WEC PAC) | $505 | 08/13/2021 |
| 68 | Kaul for Attorney General | $500 | 08/08/2021 | |
| 68 | Jonathan Wichmann for Wisconsin Governor | $500 | 08/09/2021 | |
| 68 | Democratic Party of Walworth County | $500 | 08/09/2021 | |
| 68 | Wisconsin Right to Life Victory Fund | $500 | 08/11/2021 | |
| 68 | Tony for Wisconsin | $500 | 08/11/2021 | |
| 68 | Republican Party - Dane County | $500 | 08/11/2021 | |
| 68 | Friends & Neighbors of Robin Vos | $500 | 08/13/2021 | |
| 68 | WEC Energy Group PAC (WEC PAC) | $500 | 08/13/2021 | |
| 68 | Testin for Senate | $500 | 08/13/2021 | |
| 68 | Barron County Republican Party | $500 | 08/14/2021 | |
| 68 | Annette Cruz | LeadingAge WI PAC | $500 | 08/09/2021 |
| 68 | Centene Corporation, PAC | Friends of Julian Bradley | $500 | 08/12/2021 |
| 68 | Douglas Onsi | State Senate Democratic Comm | $500 | 08/13/2021 |
| 68 | Eddy Herbison | Republican Party-Eau Claire County | $500 | 08/13/2021 |
| 68 | Frederick P. Kessler | Tony for Wisconsin | $500 | 08/11/2021 |
| 68 | Jason Rae | Tony for Wisconsin | $500 | 08/09/2021 |
| 68 | Kay Yuspeh | Tony for Wisconsin | $500 | 08/11/2021 |
| 68 | Lydia Spottswood | Tony for Wisconsin | $500 | 08/11/2021 |
| 68 | Margaret Kelsey | WEC Energy Group PAC (WEC PAC) | $500 | 08/13/2021 |
| 68 | Mark Thiede | Wisconsin Housing Alliance Political Action Committee | $500 | 08/10/2021 |
| 68 | Melissa Mulliken | Friends of Dianne Hesselbein | $500 | 08/09/2021 |
| 68 | Mona Theobald | Tony for Wisconsin | $500 | 08/08/2021 |
| 68 | Randy Cook | Barron County Republican Party | $500 | 08/12/2021 |
| 68 | Robin Edmunds | Tony for Wisconsin | $500 | 08/11/2021 |
| 68 | Sachin Chheda | Tony for Wisconsin | $500 | 08/09/2021 |
| 68 | Stephanie T. Low | Tony for Wisconsin | $500 | 08/11/2021 |
| 68 | Thad J. Nation | Tony for Wisconsin | $500 | 08/09/2021 |
| 68 | Thomas Hawley | WEC Energy Group PAC (WEC PAC) | $500 | 08/13/2021 |
| 68 | Thomas Nelson | Tony for Wisconsin | $500 | 08/12/2021 |
| 68 | Tom Metcalfe | WEC Energy Group PAC (WEC PAC) | $500 | 08/13/2021 |
| 68 | Wisconsin Restaurant Association, Inc. | Committee to Elect a Republican Senate | $500 | 08/10/2021 |
| 99 | Green Bay Local 141 | Fire Fighters for a Better Wisconsin | $450 | 08/13/2021 |
| 100 | Friends of Devin LeMahieu | Committee to Elect a Republican Senate | $413 | 08/10/2021 |
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