Rubio pans VP slot, praises Cruz but stops short of endorsement

"I'm not interested in being vice president," Rubio said Thursday. "I don't mean that in a disrespectful way."

Republican presidential candidate Senator Marco Rubio (R-FL), flanked by his family, speaks at a primary night rally on March 15, 2016 in Miami, Fla.
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Former presidential candidate Florida Sen. Marco Rubio told supporters this week Texas Sen. Ted Cruz is now "the only conservative left in the race" — but he said Thursday he has no interest in running as Cruz's vice president, or anyone else's for that matter.