Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

MANCHESTER, NH - FEBRUARY 06:  Republican presidential candidate New Jersey Governor Chris Christie participates in the Republican presidential debate at St. Anselm College February 6, 2016 in Manchester, New Hampshire. Sponsored by ABC News, the Independent Journal Review and Google, this is the final televised debate before voters go to the polls for the New Hampshire primary on February 9.  (Photo by Joe Raedle/Getty Images)
MANCHESTER, NH - FEBRUARY 06:  Republican presidential candidate New Jersey Governor Chris Christie participates in the Republican presidential debate at St. Anselm College February 6, 2016 in Manchester, New Hampshire. Sponsored by ABC News, the Independent Journal Review and Google, this is the final televised debate before voters go to the polls for the New Hampshire primary on February 9.  (Photo by Joe Raedle/Getty Images)

    JUST WATCHED

    Rubio, Christie exchange blows early

MUST WATCH

Rubio, Christie exchange blows early

During the ABC News Republican debate, Sen. Marco Rubio and Gov. Chris Christie get into a tense exchange over their qualifications.

Rubio, Christie exchange blows early

During the ABC News Republican debate, Sen. Marco Rubio and Gov. Chris Christie get into a tense exchange over their qualifications.