Morgan Carroll unsuccessfully ran against Mike Coffman for which of Colorado's congressional district?
Morgan Carroll:  Carroll stepped down as minority leader in July 2015 to unsuccessfully run against incumbent Republican Mike Coffman for Colorado's 6th congressional district in the U.S. House of Representatives. Mike Coffman: Michael Howard Coffman (born March 19, 1955) is the U.S. Representative for Colorado 's 6 congressional district , serving since 2009.
Colorado's 6th congressional district