Rubio doubles down amid criticism of being scripted

Sen. Marco RubioMarco Antonio RubioOvernight Cybersecurity: Bipartisan bill aims to deter election interference | Russian hackers target Senate | House Intel panel subpoenas Bannon | DHS giving 'active defense' cyber tools to private sector Senators unveil bipartisan push to deter future election interference Puerto Rico's children need recovery funds 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) SandersMellman: On Political Authenticity (Part 2) Former Sanders campaign manager: Don't expect email list to be shared with DNC Adult film star: Trump and Stormy Daniels invited me to 'hang out' MORE or Hillary ClintonHillary Diane Rodham ClintonIntel Dem decries White House 'gag order' after Bannon testimony 'Total free-for-all' as Bannon clashes with Intel members Mellman: On Political Authenticity (Part 2) 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.