Sen. Joe Biden nails Rudy Giuliani during Tuesday's MSNBC debate: "And the irony is, Rudy Giuliani, probably the most underqualified man since George Bush to seek the presidency, is here talking about any of the people here. Rudy Giuliani... I mean, think about it! Rudy Giuliani. There's only three things he mentions in a sentence -- a noun, a verb, and 9/11. There's nothing else! There's nothing else! And I mean this sincerely. He's genuinely not qualified to be president."
Watch Biden speak about Giuliani in this video from MSNBC:
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