Political veterans, including former Florida Governor Jeb Bush, former Hewlett-Packard CEO Carly Fiorina, Ohio Governor John Kasich, former Arkansas Governor Mike Huckabee, Texas Senator Ted Cruz, Florida Senator Marco Rubio and New Jersey Governor Chris Christie, will try to shift the focus of the campaign on the economy and foreign policy when the third GOP presidential debate happens on Wednesday, October 28 at the Coors Events Center at the University of Colorado in Boulder.