Itemized gifts are loaded through June 30, 2026 for the 2025–2026 cycle. Later FEC reports are not processed yet, so recent totals are incomplete.
WITTER, WILLIAM
Individual donor · BOULDER, CO· SELF-EMPLOYED (INVESTMENT MANAGER)
Summary by party and cycle
| Cycle | Candidate party | For | Against |
|---|---|---|---|
| 2026 | Republican | $31,300 | $0 |
| 2024 | Republican | $76,900 | $0 |
| 2022 | Republican | $85,200 | $0 |
| 2020 | Republican | $90,000 | $0 |
| 2018 | Republican | $18,500 | $0 |
| 2016 | Republican | $14,400 | $0 |
Details by candidate
| Cycle | Candidate | Party | How | For or against | Amount | Gifts | Latest | Source |
|---|---|---|---|---|---|---|---|---|
| 2026 | DAINES, STEVE | Republican | Contribution | For | $7,000 | 1 | 2025-02-12 | filing |
| 2026 | EVANS, TIMOTHY GABRIEL JOSEPH | Republican | Contribution | For | $7,000 | 2 | 2026-02-28 | latest filing |
| 2026 | CAMERON, DANIEL | Republican | Contribution | For | $7,000 | 1 | 2026-01-23 | filing |
| 2026 | TILLIS, THOM R SEN | Republican | Contribution | For | $3,500 | 1 | 2025-02-28 | filing |
| 2026 | KIM, YOUNG | Republican | Contribution | For | $3,500 | 1 | 2025-07-28 | filing |
| 2026 | COLLINS, SUSAN M. | Republican | Contribution | For | $3,300 | 1 | 2025-02-26 | filing |
| 2024 | SHEEHY, TIM | Republican | Contribution | For | $6,600 | 2 | 2024-08-15 | latest filing |
| 2024 | CRUZ, RAFAEL EDWARD TED | Republican | Contribution | For | $6,600 | 2 | 2024-10-09 | latest filing |
| 2024 | MCCORMICK, DAVE | Republican | Contribution | For | $6,600 | 2 | 2024-03-28 | latest filing |
| 2024 | HOGAN, LARRY | Republican | Contribution | For | $6,600 | 2 | 2024-03-28 | latest filing |
| 2024 | GARVEY, STEVE | Republican | Contribution | For | $6,600 | 2 | 2024-03-03 | latest filing |
| 2024 | ROGERS, MICHAEL J | Republican | Contribution | For | $6,600 | 2 | 2024-08-20 | latest filing |
| 2024 | TEIRAB, JOE | Republican | Contribution | For | $6,600 | 1 | 2024-10-14 | filing |
| 2024 | MACE, NANCY | Republican | Contribution | For | $3,300 | 1 | 2023-03-14 | filing |
| 2024 | MOLINARO, MARCUS J. | Republican | Contribution | For | $3,300 | 1 | 2023-03-21 | filing |
| 2024 | MCCORMICK, RICHARD DEAN | Republican | Contribution | For | $3,300 | 1 | 2023-05-25 | filing |
| 2024 | JUSTICE, JAMES CONLEY II | Republican | Contribution | For | $3,300 | 1 | 2023-06-21 | filing |
| 2024 | CRAMER, KEVIN | Republican | Contribution | For | $3,300 | 1 | 2023-12-12 | filing |
| 2024 | LINCOLN, KEVIN J II | Republican | Contribution | For | $3,300 | 1 | 2024-02-19 | filing |
| 2024 | EVANS, TIMOTHY GABRIEL JOSEPH | Republican | Contribution | For | $3,300 | 2 | 2024-08-01 | latest filing |
| 2024 | DOMENICI, NELLA LOUISE LOUISE | Republican | Contribution | For | $3,300 | 1 | 2024-07-23 | filing |
| 2024 | HOVDE, ERIC D | Republican | Contribution | For | $3,300 | 2 | 2024-10-31 | latest filing |
| 2024 | CRANK, JEFF | Republican | Contribution | For | $1,000 | 1 | 2024-04-11 | filing |
| 2022 | YOUNG, TODD CHRISTOPHER | Republican | Contribution | For | $5,800 | 2 | 2021-03-22 | latest filing |
| 2022 | SCOTT, TIMOTHY E. | Republican | Contribution | For | $5,800 | 1 | 2021-03-25 | filing |
| 2022 | KISTNER, TYLER | Republican | Contribution | For | $5,800 | 2 | 2022-08-14 | latest filing |
| 2022 | MURKOWSKI, LISA | Republican | Contribution | For | $5,800 | 2 | 2021-11-25 | latest filing |
| 2022 | THUNE, JOHN R. | Republican | Contribution | For | $5,800 | 2 | 2022-01-08 | latest filing |
| 2022 | JOHNSON, RON HAROLD | Republican | Contribution | For | $5,800 | 1 | 2022-01-09 | filing |
| 2022 | O'DEA, JOSEPH MATTHEW | Republican | Contribution | For | $5,800 | 2 | 2022-07-10 | latest filing |
| 2022 | KING, ESTHER JOY | Republican | Contribution | For | $3,900 | 2 | 2022-10-13 | latest filing |
| 2022 | BERNARD, CLASTON | Republican | Contribution | For | $2,900 | 1 | 2021-02-09 | filing |
| 2022 | MCCONNELL, MITCH | Republican | Contribution | For | $2,900 | 1 | 2021-02-28 | filing |
| 2022 | RICE, TOM | Republican | Contribution | For | $2,900 | 1 | 2021-04-22 | filing |
| 2022 | STEIL, BRYAN GEORGE | Republican | Contribution | For | $2,900 | 1 | 2021-05-10 | filing |
| 2022 | MORAN, JERRY | Republican | Contribution | For | $2,900 | 1 | 2021-07-01 | filing |
| 2022 | KENNEDY, JOHN NEELY | Republican | Contribution | For | $2,900 | 1 | 2021-07-27 | filing |
| 2022 | JACOBS, MATTHEW | Republican | Contribution | For | $2,900 | 2 | 2022-08-16 | latest filing |
| 2022 | LAXALT, ADAM | Republican | Contribution | For | $2,900 | 1 | 2022-01-24 | filing |
| 2022 | ADKINS, AMANDA | Republican | Contribution | For | $2,900 | 1 | 2022-06-17 | filing |
| 2022 | SHAFFER, JEREMY | Republican | Contribution | For | $2,900 | 1 | 2022-08-10 | filing |
| 2022 | KIRKMEYER, BARBARA | Republican | Contribution | For | $2,900 | 1 | 2022-09-15 | filing |
| 2022 | OZ, MEHMET | Republican | Contribution | For | $2,900 | 1 | 2022-09-16 | filing |
| 2022 | BOLDUC, DONALD C. | Republican | Contribution | For | $2,900 | 1 | 2022-10-13 | filing |
| 2022 | MACE, NANCY | Republican | Contribution | For | $2,000 | 1 | 2022-08-25 | filing |
| 2022 | LOGAN, GEORGE S | Republican | Contribution | For | $1,000 | 1 | 2021-10-26 | filing |
| 2020 | SCALISE, STEVE | Republican | Contribution | For | $7,800 | 2 | 2020-07-10 | latest filing |
| 2020 | COLLINS, SUSAN M. | Republican | Contribution | For | $5,600 | 5 | 2019-09-06 | latest filing |
| 2020 | GRAHAM, LINDSEY O. | Republican | Contribution | For | $5,600 | 1 | 2019-06-28 | filing |
| 2020 | HOUSE, STEVEN | Republican | Contribution | For | $5,600 | 2 | 2020-06-25 | latest filing |
| 2020 | MCSALLY, MARTHA | Republican | Contribution | For | $5,600 | 1 | 2019-10-23 | filing |
| 2020 | DAINES, STEVE | Republican | Contribution | For | $5,600 | 2 | 2020-03-10 | latest filing |
| 2020 | PERDUE, DAVID | Republican | Contribution | For | $5,600 | 1 | 2020-11-14 | filing |
| 2020 | LOEFFLER, KELLY | Republican | Contribution | For | $5,600 | 1 | 2020-11-14 | filing |
| 2020 | MCCONNELL, MITCH | Republican | Contribution | For | $5,400 | 2 | 2019-03-29 | latest filing |
| 2020 | TIPTON, SCOTT R. | Republican | Contribution | For | $2,800 | 1 | 2019-03-30 | filing |
| 2020 | MCMORRIS RODGERS, CATHY | Republican | Contribution | For | $2,800 | 1 | 2019-10-31 | filing |
| 2020 | JAMES, JOHN | Republican | Contribution | For | $2,800 | 1 | 2019-12-02 | filing |
| 2020 | GARCIA, MICHAEL | Republican | Contribution | For | $2,800 | 1 | 2020-05-15 | filing |
| 2020 | PARNELL, RICHARD SEAN | Republican | Contribution | For | $2,800 | 1 | 2020-06-02 | filing |
| 2020 | KISTNER, TYLER | Republican | Contribution | For | $2,800 | 1 | 2020-06-09 | filing |
| 2020 | ERNST, JONI K | Republican | Contribution | For | $2,800 | 1 | 2020-06-15 | filing |
| 2020 | TILLIS, THOM R SEN | Republican | Contribution | For | $2,800 | 1 | 2020-06-17 | filing |
| 2020 | MARSHALL, ROGER W | Republican | Contribution | For | $2,800 | 1 | 2020-08-05 | filing |
| 2020 | MARCHANT, JIM | Republican | Contribution | For | $2,800 | 1 | 2020-08-20 | filing |
| 2020 | FISCHBACH, MICHELLE | Republican | Contribution | For | $2,800 | 1 | 2020-09-16 | filing |
| 2020 | KING, ESTHER JOY | Republican | Contribution | For | $2,800 | 1 | 2020-10-15 | filing |
| 2020 | STEIL, BRYAN GEORGE | Republican | Contribution | For | $1,000 | 1 | 2019-10-31 | filing |
| 2020 | BOLDUC, DONALD C. | Republican | Contribution | For | $1,000 | 1 | 2020-01-15 | filing |
| 2020 | LUMMIS, CYNTHIA MARIE | Republican | Contribution | For | $1,000 | 1 | 2020-02-21 | filing |
| 2020 | VAN DREW, JEFF | Republican | Contribution | For | $1,000 | 1 | 2020-06-14 | filing |
| 2018 | RYAN, PAUL D. | Republican | Contribution | For | $5,400 | 2 | 2017-07-06 | latest filing |
| 2018 | MESSER, ALLEN LUCAS | Republican | Contribution | For | $2,700 | 1 | 2017-08-01 | filing |
| 2018 | STEIL, BRYAN GEORGE | Republican | Contribution | For | $2,700 | 2 | 2018-09-24 | latest filing |
| 2018 | KINGSTON, JOHN | Republican | Contribution | For | $2,700 | 1 | 2018-08-07 | filing |
| 2018 | BARRASSO, JOHN A | Republican | Contribution | For | $1,000 | 1 | 2017-05-24 | filing |
| 2018 | TENNEY, CLAUDIA | Republican | Contribution | For | $1,000 | 1 | 2017-06-30 | filing |
| 2018 | TIPTON, SCOTT R. | Republican | Contribution | For | $1,000 | 1 | 2018-09-18 | filing |
| 2018 | CRUZ, RAFAEL EDWARD TED | Republican | Contribution | For | $1,000 | 1 | 2018-09-21 | filing |
| 2018 | COLLINS, SUSAN M. | Republican | Contribution | For | $1,000 | 1 | 2018-11-04 | filing |
| 2016 | RYAN, PAUL D. | Republican | Contribution | For | $5,400 | 2 | 2016-06-17 | latest filing |
| 2016 | COFFMAN, MIKE REP. | Republican | Contribution | For | $5,300 | 3 | 2016-06-14 | latest filing |
| 2016 | GLENN, DARRYL | Republican | Contribution | For | $2,700 | 1 | 2016-07-29 | filing |
| 2016 | TIPTON, SCOTT R. | Republican | Contribution | For | $1,000 | 1 | 2015-08-13 | filing |