It's only 9%, and Trump is almost certainly going to win this thing, but Chris Christie represents the NeverTrumpers who will never vote for Trump. And if 1 in 11 Republicans will not vote for Trump, that's a pretty big hill to climb for MAGA.
www.rasmussenreports.com

Trump Maintains Primary Lead After First GOP Debate
Former President Donald Trump’s decision to skip the first televised debate among Republican candidates does not appear to have shaken his strong support among GOP voters.