Voters in some Indiana counties that have consolidated polling sites faced lines of an hour or more before they were able to cast their ballots.
Tuesday's election saw 19 of Indiana's 92 counties use vote centers, where residents can vote at any of the sites rather than just at their neighborhood precinct.
Vicki Melton of New Albany said it was ridiculous that she faced a 90-minute wait at one of Floyd County's vote centers. Officials said six of the county's 11 vote centers faced technical troubles.
Terre Haute voters faced waits of up to 90 minutes at a vote center inside a grocery store.
Wayne County Clerk Debra Berry said she was surprised by the voter turnout that led to 45-minutes lines for at least one Richmond vote center.