Democratic opponents used a procedural move Tuesday to prevent a final vote on passing the bill until Wednesday.
The bill would restrict in-person absentee voting to between 8 a.m. and 7 p.m. on weekdays in the two weeks before an election. No weekend hours would be allowed and total voting hours would be limited to no more than 45 hours per week.
Democrats and other opponents say the intention is to make it more difficult for Democratic voters in urban areas to vote. But Republican supporters say voters still have plenty of opportunity to cast early ballots.