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US Republican Presidential candidates (L-R) Marco Rubio, Donald Trump, Ted Cruz and John Kasich pose for a photo at start of the Republican Presidential Debate in Detroit on March 3, 2016.
US Republican Presidential candidates (L-R) Marco Rubio, Donald Trump, Ted Cruz and John Kasich pose for a photo at start of the Republican Presidential Debate in Detroit on March 3, 2016.

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    Voters heading to the polls in four states

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Voters heading to the polls in four states

CNN's best political team in television discusses what could come of Super Tuesday round two.

Voters heading to the polls in four states

CNN's best political team in television discusses what could come of Super Tuesday round two.