Gov. Chris Christie threw a jab at Sen. Marco RubioMarco Antonio RubioLiberal think tank: GOP paid parental leave proposals are too narrow GOP senator: 'Outrageous' to say Trump's tweets about Democratic congresswomen are racist House passes bills to boost small business cybersecurity MORE (Fla.) during Thursday's GOP presidential debate, telling him he "blew it" on a question.

Christie jumped in following a long, detailed discussion on taxes between Sen. Ted CruzRafael (Ted) Edward CruzThe Hill's Morning Report - Presented by JUUL Labs - House to vote to condemn Trump tweet Cruz in 2016 said 'something fundamentally wrong' with Christians who back Trump: book Hillicon Valley: Twitter says Trump 'go back' tweet didn't violate rules | Unions back protests targeting Amazon 'Prime Day' | Mnuchin voices 'serious concerns' about Facebook crypto project | Congress mobilizes on cyber threats to electric grid MORE (Texas) and Rubio, saying they had ignored the actual question, which was on entitlement programs.

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"I'd like to interrupt this debate on the floor of the Senate to actually answer the question you asked, which was on entitlements," Christie said.

Rubio interrupted and said he would now answer the question, but Christie cut him off.

"You already had your chance, you blew it," Christie said.

While the crowd booed Christie's response, Rubio remained silent and Christie kept speaking.

"The reason why no one wants to answer entitlements up here is because it's hard. I'm the only one on this stage who, back in April, put forward a detailed entitlement reform plan that will save over $1 trillion, save Medicare, save social security, and avoid what Hillary Rodham Clinton will do to you," Christie said.

"She will come in and raise Social Security taxes. Bernie SandersBernie SandersWarren embraces Thiel label: 'Good' Sanders slams decision not to charge officer who killed Eric Garner Cardi B says voters let Bernie Sanders down MORE has already said it, and she's just one or two more poll drops down from even moving further left than she's moved already to get to the left of Bernie on this."