Rubio doubles down amid criticism of being scripted

Sen. Marco RubioMarco Antonio RubioGOP Senate candidates trade barbs in brutal Indiana primary Students gather outside White House after walkout to protest gun violence Overnight Energy: Senate confirms Bridenstine as NASA chief | Watchdog probes Pruitt’s use of security detail | Emails shine light on EPA science policy changes MORE (R-Fla.) on Monday night said he will continue his attacks on President Obama amid criticism from his GOP rivals that the Florida senator sounds scripted.

"At the end of the day, I'm going to continue to say what I said that night," Rubio said in an interview with on Fox News’s “The Kelly File" after his campaign event on the eve of the New Hampshire primary. "This is a core part of our message."

At Saturday night’s GOP debate, New Jersey Gov. Chris Christie stepped up his attacks on Rubio, criticizing his Senate record and the Florida senator’s repeated lines.

When pressed if he memorizes responses, the Florida senator pushed back and reiterated why he repeats the line. 

"This is what I deeply believe. I know no other way to describe it other than the fact that this president is undertaking a systematic effort to redefine the role of government in our country and the role of America and the world."

"If Bernie SandersBernard (Bernie) SandersSanders ally pushes Dems on cutting superdelegates Sanders: ‘Trump's agenda is dead’ if Democrats win back majority Hannity snaps back at 'Crybaby' Todd: 'Only conservatives have to disclose relationships?' MORE or Hillary ClintonHillary Diane Rodham ClintonClinton takes swipe at 'false equivalency' in media coverage of 2016 election Former presidents, first ladies come together to honor Barbara Bush Romney: Parts of Comey book read 'too much like a novel’ MORE wins, it's going to become permanent," Rubio continued. 

While explaining that he answered questions on national security and abortion, protestors behind Rubio and Kelly started to drown out the interview, followed by supporters chanting Rubio's name.

In a subsequent interview with Kelly on Monday night, Christie continued to hammer Rubio over his repeated debate responses and blasted the Florida senator for repetitive stump speeches.

"It was non-responsive to the question. It just shows he's not ready to be president of the United States," Christie said. 

"Nobody buys that it's responsive. And he got caught doing exactly what I've been saying he's been doing the whole campaign," he added.

When asked if Christie ever repeats lines, the governor conceded that he's delivered similar lines, but said that his campaign events are rarely the same.

"If you go to my town hall meetings, I almost never open the same way. I almost never close the same way. My answers are different," Christie said.