Federal candidate · 2025–2026 cycle
David Costello
- Party
- Democratic
- Running for
- U.S. Senate · Maine
- Filing address
- Brunswick, ME (city and state on the FEC filing)
- FEC filing name
- COSTELLO, DAVID
- Next election
- Primary June 9, 2026 · (Wikipedia, checked October 22, 2026; confirm with your state election office)
Maine
FEC candidate ID S4ME00113 · Principal campaign committee: COSTELLO FOR U.S. SENATE
| Cycle | Office | Raised | Outcome |
|---|---|---|---|
| 2025–2026 | U.S. Senate · Maine | $154,377.10 | Lost primary |
| 2023–2024 | U.S. Senate · Maine | $111,307.55 | General-election nominee |
2025–2026 cycle totals through August 26, 2026, from the FEC’s candidate summary file. This is a dated snapshot, not live reporting; the FEC’s page for this candidate is the official source.
Where the money comes from
- Individual contributions$39,095.4625%
- Candidate’s own money (contributions and loans)$115,270.9875%
- Other receipts (loans from others, refunds, interest)$10.660%
Self-funding: $115,270.98 (75% of money raised): $5,270.98 given and $110,000.00 lent by the candidate. $110,000.00 of loans repaid so far.
Individual money
- Contributions of $200 or less (small-dollar, including unitemized)$20,419.7652%
- Contributions over $200$18,675.7048%
- Itemized from inside Maine$9,809.7051%
- Itemized from other states$9,288.0049%
FEC-computed totals by contribution size and state, retrieved October 22, 2026. No individual contributor is named.
Raised and spent over time
Raised per report Spent per report Cash on hand
The race
Maine U.S. Senate, 2026 · 24 registered candidates
| Candidate | Raised | Cash on hand | Through |
|---|---|---|---|
| David Costello (D) | $154,377.10 | $0.00 | 2026-08-26 |
| Troy Dale Jackson (D) | $26,872,873.96 | $1,596,870.56 | 2026-10-14 |
| Susan M. Collins (R) | $22,465,217.83 | $2,689,882.54 | 2026-10-14 |
| Jordan Wood (D) | $6,391,429.51 | $19,224.63 | 2026-09-30 |
| Janet Trafton Mills (D) | $6,115,222.30 | $74,197.93 | 2026-09-30 |
| Dan Kleban (D) | $535,803.79 | $15,159.56 | 2026-09-30 |
| Saundra Pelletier (D) | $426,560.00 | $0.00 | 2026-09-30 |
| Shenna Bellows (D) | $381,370.64 | $135.50 | 2026-08-31 |
| Nirav Shah (D) | $280,756.88 | $0.00 | 2026-09-30 |
| Daira Rodriguez (D) | $242,582.34 | $0.00 | 2025-12-31 |
Polling and ratings
Race ratings
Recent polls
Polling average: Susan Collins 47.1% · Troy Jackson 49.3% (Jackson +2.2%). Averages listed on Wikipedia from 270toWin, Decision Desk HQ, FiftyPlusOne, RealClearPolitics, Silver Bulletin.
| Pollster | Dates | Sample | Margin of error | Results |
|---|---|---|---|---|
| InsiderAdvantage (R) | October 13–14, 2026 | 1,200 (LV) | ±2.8% | Susan Collins 47% · Troy Jackson 49% |
| Suffolk University | October 8–11, 2026 | 500 (LV) | ±4.4% | Susan Collins 47% · Troy Jackson 49% |
| Rasmussen Reports (R) | October 5–8, 2026 | 804 (LV) | ±3.0% | Susan Collins 47% · Troy Jackson 49% |
| The Washington Post/SSPG | September 30 – October 5, 2026 | 800 (LV) | ± 3.6% | Susan Collins 46% · Troy Jackson 50% |
| Marist University | October 1–4, 2026 | 1,505 (RV) | ± 3.8% | Susan Collins 47% · Troy Jackson 51% |
| Trafalgar Group (R) | September 29 – October 1, 2026 | 1,091 (LV) | ±2.9% | Susan Collins 46% · Troy Jackson 46% |
Ratings and polls as listed on Wikipedia: 2026 United States Senate election in Maine (retrieved October 22, 2026), licensed CC BY-SA 4.0. TerraCivic does not rate races or compute its own average.
Sources and updates
- Money: FEC bulk data (candidate summary, committee master, committee-to-candidate contributions), retrieved October 23, 2026. FEC candidate page · Principal campaign committee: COSTELLO FOR U.S. SENATE.
- Polling, ratings and candidate status: Wikipedia, retrieved October 22, 2026 (CC BY-SA 4.0).
- Status shown above comes from the race’s Wikipedia page.
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