Retail campaign events are Scott Brown’s forte, showcasing the unassuming demeanor and approachability that helped propel him into the unlikely role of Massachusetts’ junior senator as a Republican. Now running for reelection, he’s no longer just a political phenomenon, but an incumbent, with all the benefits and baggage that role carries, and he faces an opponent who is a phenomenon in her own right. But to many voters, Elizabeth Warren remains an unknown.
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