Ind. Code § 5-2-2-2
The commission shall consist of six (6) members appointed by the governor. Such appointments shall be made by May 7, 1971, and shall be made on a bipartisan basis so that not more than one-half (1/2) of the members of the commission shall at any time be members of either of the two (2) major political parties. In the first instance, two (2) members shall be appointed for a term of two (2) years, two (2) for three (3) years, and two (2) for four (4) years, and the members of said commission shall be appointed for a term of four (4) years, excepting when appointed to fill a vacancy, in which case such appointment shall be only for such unexpired term. All members of said commission shall serve as such until their successors are duly appointed and qualified and shall be subject to removal only for good cause.
IC 5-2-2-2