John Gregg, who Mike Pence defeated in 2012, is considering a second run for governor in 2016.
Leaders of the Indiana Democratic Party say they are hoping to break the GOP's supermajority in both houses.
Indianapolis officials say the city is already booked with other conventions in 2016.
Evans says he grew tired of the "shenanigans" in the Marion County Democratic Party.
Political scientists in the state say strong candidates at the top of a ticket may not influence other elections like they used to.
Indiana Democratic Party Chairman Dan Parker, who has served for seven years, announced he is resigning.
Commission chairman Tom Wheeler says he feels like their hands are tied because of the wording of voter registration laws.
As the third week of the Indiana Democrat hold-out begins, the House remains unable to do business.
Bloomington resident John Hamilton announced yesterday that he will run for mayor of Bloomington.