Donations can be made to political candidates in various amounts. The FEC regulates these donations, and individual groups, excluding PACs, must disclose donations over $250 per year.
The following table lists top 100 contributions donated to Bryan George Steil's campaign in June.
| Rank | Contributor | Amount |
|---|---|---|
| 1 | Barbara A. Michels | $5,600 |
| 1 | Connie L. Michels | $5,600 |
| 1 | Kevin P. Michels | $5,600 |
| 1 | Marysue C. Michels | $5,600 |
| 1 | Patrick D. Michels | $5,600 |
| 1 | Timothy Michels | $5,600 |
| 1 | Eric Hovde | $5,600 |
| 1 | Deron S. Lichte | $5,600 |
| 1 | Karen Kennedy | $5,600 |
| 1 | Stephen M. Kennedy | $5,600 |
| 1 | John E. Schlifske | $5,600 |
| 1 | Kim C. Schlifske | $5,600 |
| 1 | Craig Duchossois | $5,600 |
| 1 | Kathleen Bush | $5,600 |
| 1 | Mark F. Bush | $5,600 |
| 1 | Ann Johnson | $5,600 |
| 1 | Scott Dixon | $5,600 |
| 18 | David Cullen | $5,393 |
| 19 | Kathy Cullen | $5,305 |
| 20 | James Johnson | $5,100 |
| 21 | Brian Carr | $4,050 |
| 22 | Michael Hupy | $3,600 |
| 22 | Mary Kellner | $3,600 |
| 24 | Brenda Wegge | $2,800 |
| 24 | Kim Hendricks | $2,800 |
| 24 | Diane L. Kennedy | $2,800 |
| 24 | Gina Masters | $2,800 |
| 24 | Dennis Klumb Jr. | $2,800 |
| 24 | Pamela Klumb | $2,800 |
| 24 | Maureen Ziegler | $2,800 |
| 24 | Terry Grosenheider | $2,800 |
| 24 | Paul Palmby | $2,800 |
| 24 | Joseph Pregont | $2,800 |
| 24 | Mary Pregont | $2,800 |
| 24 | David Robinson | $2,800 |
| 24 | Rebecca Robinson | $2,800 |
| 24 | Rachel English | $2,800 |
| 24 | Kari-Ann Buehl | $2,800 |
| 24 | Carol Cullen | $2,800 |
| 24 | Mark A. Cullen | $2,800 |
| 24 | Brent Fox | $2,800 |
| 24 | Celease Fox | $2,800 |
| 24 | Kraig Kayser | $2,800 |
| 24 | Daniel Hartung | $2,800 |
| 24 | Sandra L. Jacobs | $2,800 |
| 46 | John Silseth | $2,600 |
| 47 | David Kriete | $2,500 |
| 48 | Louie Gentine | $2,000 |
| 49 | Lynn M. Gardinier | $1,800 |
| 50 | Ted Kellner | $1,600 |
| 51 | James L. Packard | $1,500 |
| 52 | Debra Waller | $1,400 |
| 53 | Steve Gordon | $1,000 |
| 53 | Michael S.D. Kachel | $1,000 |
| 53 | Donna Mary Kozina | $1,000 |
| 53 | Becky E. Merwin | $1,000 |
| 53 | Michael B. Wittenwyler | $1,000 |
| 53 | Wayne Jurecki | $1,000 |
| 53 | James Lombardo | $1,000 |
| 53 | Richard W. Graber | $1,000 |
| 53 | Josh Gray | $1,000 |
| 53 | Hagen Harker | $1,000 |
| 53 | Lisa J. Indgjer | $1,000 |
| 53 | Timothy H. Lindau | $1,000 |
| 53 | Karen V.C. Jansson | $1,000 |
| 53 | William Kunkler | $1,000 |
| 53 | Peter Underwood | $1,000 |
| 53 | William J. Mccoshen | $1,000 |
| 53 | Kathryn Neitzel | $1,000 |
| 53 | Kurt Bauer | $1,000 |
| 53 | Scott Christopher Beightol | $1,000 |
| 53 | Robert Palmer | $1,000 |
| 53 | Carol Taylor | $1,000 |
| 53 | Jamin A. Arn | $1,000 |
| 53 | David E. Babcock | $1,000 |
| 53 | David Charles | $1,000 |
| 53 | Frank R. Scott | $1,000 |
| 53 | Douglas Scott | $1,000 |
| 53 | Sherri Stumpf | $1,000 |
| 53 | Thomas A. Hollfelder | $1,000 |
| 53 | Marc Goldman | $1,000 |
| 53 | Mark C. Behrens | $1,000 |
| 53 | Richard Divelbiss | $1,000 |
| 53 | Oswaldo Palomo | $1,000 |
| 53 | Edwin A. Gardinier Jr. | $1,000 |
| 53 | Mike Jost | $1,000 |
| 53 | Christopher Anderson | $1,000 |
| 53 | Jonathan Kuester | $1,000 |
| 89 | Kelly J. Malchine | $700 |
| 90 | Charles Waller | $600 |
| 91 | William A. Hardt | $500 |
| 91 | James R. Kersten | $500 |
| 91 | William Viney | $500 |
| 91 | Stephen Ruhlen | $500 |
| 91 | Charles Harker | $500 |
| 91 | Prudence Harker | $500 |
| 91 | William D. Jones | $500 |
| 91 | Donald F. Kress | $500 |
| 91 | Kathleen Striegler | $500 |
| 91 | Rose Oswald Poels | $500 |
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