Huckabee’s exit widens an already open field

WASHINGTON — Mike Huckabee’s deci­sion to forgo a shot at the U.S. pres­i­dency fur­ther mud­dies the field for a wor­thy Repub­li­can chal­lenger to Pres­i­dent Barack Obama, and leaves America’s social con­ser­v­a­tives with­out a clear can­di­date to throw their sup­port behind.