Latest voter registration numbers show 13,000 fewer people are registered for this year's primary than four years ago.
The Chicago Lawyers‘ Committee for Civil Rights Under Law says it took 800 election complaints from Hoosiers last year.
Secretary of State Connie Lawson visited Bartholomew County on Monday to discuss how the county could use vote centers in future elections.
Wells County saw the highest voter turnout at 72 percent. Scott County saw the lowest with 46 percent.
More than 2.6 million of Indiana's 4.5 million registered voters cast ballots this year.