Credit to StateBoller for spotting this. It was released along with the presidential and weird gubernatorial poll with the Libertarian candidate at 24%.
http://indypolitics.org/polling-positions-part-three/September 3-7
1033 likely voters
MoE: 3.1%
Changes with April 10-13 poll
Todd Rokita (R) 49%
Jonathan Weinzapfel (D) 34%
Undecided 18%
Rokita’s favorable/unfavorable ratings were 17-24. While Weinzapfel’s ratings were 9/8. 64 percent of the voters had never heard of him.
Curtis Hill (R) won 62.3%-37.7% in 2016.