Federal candidate · 2019–2020 cycle · past cycle
William Mendiola Castro
- Party
- Republican
- Running for
- U.S. House · Guam at large
- Filing address
- Barrigada Gmf, GU (city and state on the FEC filing)
- FEC filing name
- CASTRO, WILLIAM MENDIOLA
- Next election
- General November 3, 2020 (Wikipedia, checked October 23, 2026; confirm with your state election office)
Guam, at large
FEC candidate ID H0GU01027 · Principal campaign committee: COMMITTEE TO ELECT WIL CASTRO FOR CONGRESS (4 WIL DRIVE)
2019–2020 cycle totals through December 31, 2020, 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$38,779.86100%
Raised and spent over time
Report-by-report history is shown for the current cycle.
The race
Guam U.S. House, at-large seat, 2020 · 4 registered candidates
| Candidate | Raised | Cash on hand | Through |
|---|---|---|---|
| William Mendiola Castro (R) | $38,779.86 | −$5,109.81 | 2020-12-31 |
| Robert Anacletus Underwood (D) | $246,097.40 | $128.97 | 2020-12-31 |
| Robert Anacletus Underwood (D) | $246,097.40 | $128.97 | 2020-12-31 |
| Michael F.q. San Nicolas (D) | $94,956.00 | $20,864.33 | 2020-12-31 |
Polling and ratings
Race ratings
No published race ratings found.
Recent polls
No public polling found for this race.
Ratings and polls as listed on Wikipedia: 2020 United States House of Representatives election in Guam (retrieved October 23, 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: COMMITTEE TO ELECT WIL CASTRO FOR CONGRESS (4 WIL DRIVE).
- Polling, ratings and candidate status: Wikipedia, retrieved October 23, 2026 (CC BY-SA 4.0).
- Status shown above comes from the FEC candidate file.
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