06/12/2015 10:07 am ET Updated Jun 12, 2015

Scott Walker & Marco Rubio: Contrasting Rivals Or Dream Ticket?

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Marco Rubio and Scott Walker are both 40-something, fast-rising Republican stars who are building presidential campaigns on the notion that a fresh-faced candidate from humble beginnings is best equipped to defeat Hillary Clinton —and, before her, Jeb Bush.

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