Candidate for Senator

William Mendiola Castro

RepublicanBallot No. 15

Ballot name / slogan: “Wil”

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Candidate summary

William "Wil" Mendiola Castro is a Guam Republican politician and educator who served as a senator (2017–2021), including as Minority Leader of the 35th Legislature, and was the Republican candidate for Guam's U.S. House seat in 2020. He later served as Chief of Staff to CNMI Governor Ralph Torres.

Election snapshot

Office soughtSenator

Who votes in this raceAll Guam voters — islandwide, pick up to 15

PartyRepublican

IncumbentNo

On the ballotPrimary — Aug 1, 2026

Number on the ballotNo. 15

Ballot name“Wil”

Sources

Wikipedia

Compiled from public sources; not verified by the candidate.

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