HRS §11-108.5
Mail-in ballots stay valid if voter becomes ineligible later
If you were eligible to vote when you cast your mail-in ballot, it stays valid even if you become ineligible later, including if you die. The ballot is considered cast when you return the envelope with your marked ballot or vote in person at a voter service center.
The statute, as written — Validity of cast mail-in ballot where voter later becomes ineligible
The mail-in ballot of any voter who was eligible to vote at the time the ballot was cast shall not be deemed invalid solely because the voter became ineligible to vote, including by death of the voter, after casting the ballot. For the purposes of this section, "cast" means that the voter has: (1) Returned the return identification envelope containing the optional secrecy envelope or secrecy sleeve with the marked ballot in any manner permitted pursuant to section 11-104(c); or (2) Completed voting in person at a voter service center.
Sections this one refers to
§11-104 How to mark and return your ballot
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.