Hawaii election officials are racing against a deadline that is bad news for thousands of voters whose mail-in ballots are at risk of being thrown out.

• About 3,100 ballots statewide were flagged as invalid, mostly over missing or mismatched signatures.
• Only a few hundred voters have fixed the problem so far, and most of those are on Maui.
• Voters have until the afternoon of the next day to fix their ballots online or in person, or their votes won't count.
• Some races are close enough that uncured ballots could still flip the outcome, including a state house race decided by just over 100 votes and a close statewide trustee race.

Outlook: Most flagged ballots are expected to stay uncured and unopened, so officials see only a small chance any results change before certification.