Republican presidential candidates debate before New Hampshire primary

From left, John Kasich, Jeb Bush, Marco Rubio, Donald Trump, Ted Cruz, Ben Carson and Chris Christie debate in New Hampshire.

Former Florida Gov. Jeb Bush, left, answers a question Saturday as Sen. Marco Rubio of Florida looks on.

Republican presidential candidates Marco Rubio, Donald Trump, Ted Cruz, Ben Carson and Chris Christie, from left. Not pictured are Jeb Bush and John Kasich.

Businessman Donald Trump, leading in New Hampshire polls, debates six Republican rivals in Manchester.

Sen. Ted Cruz of Texas speaks at the last debate before voters go to the polls Tuesday for the New Hampshire presidential primary, the first in the U.S.

Marco Rubio looks on as Jeb Bush, left, and Donald Trump, right, spar at the debate.

New Jersey Gov. Chris Christie greets the crowd from the GOP debate stage.

New Jersey Gov. Chris Christie at the Feb. 6 debate in New Hampshire.

Ben Carson at the Republican debate in New Hampshire.

Ohio Gov. John Kasich shakes hands with former Florida Gov. Jeb Bush after the Feb. 6 debate.

Ohio Gov. John Kasich at the Feb. 6 Republican debate.