INDIANAPOLIS (AP) — Indiana Gov. Mike Pence has scheduled a Statehouse announcement about his administration amid signs that Lt. Gov. Sue Ellspermann might not be his running mate in this year’s election.

The Tuesday afternoon event comes a day after former state Republican Party chairman Eric Holcomb ended his 11-month campaign for the U.S. Senate seat being vacated by retiring GOP Sen. Dan Coats. Holcomb hinted in a statement that he would soon make another announcement about his plans to serve the state.

Aides to Pence and Holcomb have declined to comment.

Pence raised the possibility of splitting with Ellspermann in December, saying that his 2012 running mate would be an “ideal” candidate to become new president of the state’s Ivy Tech Community College system.