John Kasick, Mike Huckabee, Jeb Bush, Msrco Rubio, Donald Trump, Ben Carson
FILE - From left, Ohio Gov. John Kasich, former Arkansas Gov. Mike Huckabee, former Florida Gov. Jeb Bush, Sen. Marco Rubio, R-Fla., Donald Trump and Ben Carson, participate in a debate for Republican presidential hopefuls in Boulder, Colo., Oct. 28, 2015. It's been more than seven years since the 2016 presidential campaign, and Republicans are still trying to figure out how to run against Donald Trump. (AP Photo/Mark J. Terrill, File) OCT. 28, 2015 FILE PHOTO
