Indiana Code Title 3. Elections § 3-12-8-17

(1) nominated at the primary, and that a ballot vacancy exists that the political party may fill under IC 3-13-1 or IC 3-13-2;  or

(2) elected at the general or municipal election, and that an office vacancy exists that may be filled under IC 3-13, subject to the right of an individual currently serving in the office to hold over in that office under Article 15, Section 3 of the Constitution of the State of Indiana.

(1) a mistake in the printing or distribution of the ballots used in the election;

(2) a mistake in the programming of an electronic voting system;

(3) a malfunction of an electronic voting system;  or

(4) the occurrence of a deliberate act or series of actions;  makes it impossible to determine which candidate received the highest number of votes, the court shall order that a special election be conducted under IC 3-10-8.

(1) ballots containing the printing mistake or distributed by mistake were cast;

(2) a mistake occurred in the programming of an electronic voting system;

(3) an electronic voting system malfunctioned;  or

(4) the deliberate act or series of actions occurred.