IC 3-12-1-10: Void ballot

Sec. 10. A ballot on which a voter writes:

(1) the voter's name;

(2) the voter's initials;

(3) a number; or

(4) a symbol (such as a star, circle, parallel lines, dots, or any combination of such symbols), if written with the intent to enable a person to determine who cast the ballot;

is void.