“Most Republican voters hate their party,” Michael Needham said.
Christie said he is still deciding what to do with 11 million illegal immigrants in the U.S.
"I don’t know what Donald Trump is paying attention to," Perry says.
“I have enough to do to get my message out to people,” Kasich said.
"We all need to take a deep breath," he said about polls.
Trump leads the GOP field in a new Wall Street Journal/NBC News poll.
The GOP presidential candidate sparked a firestorm with similar comments in February.
He added he doesn't see "a dime’s worth of difference" between Hillary Clinton and Bernie Sanders.
“Unless we can have full access, 24/7, anytime, any day, there's nothing to negotiate," he said.
He is taking aggressive steps in Iowa and New Hampshire.