Cross one name off the list - former Governor Mitch Daniels says he won't make another run at governor this year if, as it now appears, current Governor Mike Pence leaves to seek a higher office.
Daniels had been mentioned as a leading possibility for the Republican gubernatorial ticket in the event Mike Pence became Donald Trump's running mate.
The former governor, who became president at Purdue University after his second term expired, says he was encouraged by many to run – including, he says, a majority of the Indiana Republican Party's state committee, which is responsible for choosing a replacement candidate.
But Daniels remains committed to Purdue, saying he's "enthusiastic" about pursuing what he calls the "exciting things" happening at the university.
Pence has been in a contentious re-election campaign and would have until noon Friday to withdraw his name as a candidate for governor since state law prevents him from seeking two offices at once.
Lt. Gov. Eric Holcomb, Indiana House Speaker Brian Bosma and U.S. Reps. Todd Rokita and Susan Brooks have also been mentioned as possible options should Republicans need to replace Pence on the ballot.
The Associated Press contributed to this story.