Hispanic votes is the worry….
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They use words like “historic” and “charismatic,” phrases like “great potential” and “million-dollar smile.” They notice audience members moved to tears by an American-dream-come-true success story. When they look at the cold, hard political math, they get uneasy.

An incipient sense of anxiety is tugging at some Democrats — a feeling tersely captured in four words from a blog post written recently by a seasoned party strategist in Florida: “Marco Rubio scares me.”

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