Governor-elect Eric Holcomb will get to put his stamp on Indiana GOP leadership as current chair Jeff Cardwell resigns his post.
Cruz made his pitch to state GOP leaders and donors one day after Donald Trump addressed a rally of thousands.
Indiana's Republican Party says it invited all presidential candidates to the event.
Indiana GOP Chair Tim Berry says he expects fierce competition for the state treasurer nomination.
Last week's GOP-commissioned phone survey says 53 percent of Hoosiers surveyed support the same-sex marriage ban known as HJR-3.