FILE - In this Aug. 15, 2013 file photo, Colorado Gov. John Hickenlooper, left, attends a rally launching the public campaign for an education initiative, at Green Mountain High School in Lakewood, Colo. With him are, center to right, Colorado state Sen. Mike Johnston (D-Denver), and then-Lt. Gov. Joseph Garcia. On Tuesday, Jan. 17, 2017, Johnston announced that he is running for Colorado governor in the 2018 race to succeed Governor Hickenlooper. (AP Photo/Brennan Linsley, File)