The state attorney general's office says Ronnie Wilkerson of Blue Mountain pleaded guilty to one count of conspiracy to commit voter fraud, Jasper Buggs of Michigan City pleaded guilty to two counts of voter fraud and James Bullock of Ashland pleaded guilty to five counts of voter fraud.
Circuit Judge Andrew Howorth sentenced the men to five years each, with four suspended and one served under house arrest.
Tate King of Ashland was removed as District 1 supervisor after pleading guilty to one count of voter fraud. A jury convicted King on one count last week, but didn't reach a verdict for the one to which he pleaded Monday.
His sentencing is Oct. 8.
So far, 14 people have either plead guilty or have been found guilty in this case. Two others are awaiting trial.
The charges stem from an investigation into allegations of fraud, including the buying and selling of votes, in the 2007 primary and runoff elections in Benton County.