The Fix  ·   March 10, 2016

Despite increasingly dismal finishes, Rubio stays positive

- Marco Rubio has been remarkably upbeat in the wake of primary losses. Now he's staking everything on Florida. ()

- Marco Rubio has been remarkably upbeat in the wake of primary losses. Now he's staking everything on Florida. ()

Despite increasingly dismal finishes, Rubio stays positive (1:49)

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