Republican 2016 presidential candidates, from left, New Jersey Governor Chris Christie, U.S. Senator Marco Rubio, Dr. Ben Carson, Wisconsin Governor Scott Walker, businessman Donald Trump, former Florida Governor Jeb Bush, former Arkansas Governor Mike Huckabee, U.S. Senator Ted Cruz, U.S. Senator Rand Paul and Ohio Governor John Kasich (Photo: Reuters)

(VOVworld) – In the US, the 10 leading Republican presidential candidates had their first big debate of the 2016 presidential campaign on Thursday, broadcast on Fox News from the Quicken Loans Arena, in Cleveland, Ohio. They are the 10 most popular of 17 Republican candidates, according to opinion polls conducted by Bloomberg, CBS, Fox, Monmouth University, and Quinnipiac University.