HRS §15-11
No voting twice after casting an absentee ballot
If you already voted by absentee ballot, you cannot vote again at a voter service center on election day. Doing so is an election offense and can lead to penalties.
The statute, as written — Voting by absentee voter at a voter service center prohibited
Any person having voted an absentee ballot pursuant to this chapter shall not be entitled to cast a ballot at a voter service center on election day. An absentee voter who casts a ballot at a voter service center shall be guilty of an election offense under section [19-3(a)(5)].
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.