Indiana Code Title 36. Local Government § 36-3-4-12

Sec. 12. (a) A two-thirds ( 2/3 ) vote of all the elected members, after unanimous consent of the members present to consider the ordinance, is required to pass an ordinance of a legislative body on the same day or at the same meeting at which it is introduced.

(b) Subsection (a) does not apply to an ordinance that is:

Such an ordinance may be passed by a majority vote on the same day or at the same meeting at which it is introduced.

(c) Subsection (a) does not apply to a zoning ordinance or amendment to a zoning ordinance that is adopted under IC 36-7.