It's official. University of Denver President Mark Holtzman will run for Governor. He joins a crowded field on the Republican side: State Treasurer Mike Coffman, Rep. Bob Beauprez and former Rep. Scott McInnis all have expressed interest. The Denver Post lists potential Democratic candidates as Rutt Bridges, ex-Denver D.A. Bill Ritter and former Lt. Gov. Gail Schoettler. Where's Denver Mayor Hickenlooper? Colorado Pols still has him on their list.