Senator Scott Brown and his Democratic challenger, Elizabeth Warren had their most heated debate yet on Wednesday night, but beyond the sound and fury, two simple, substantive lines of attack emerged. Brown, the Republican incumbent, cast himself as the guardian of lunch-bucket and other middle-class voters, as he accused Warren of viewing tax increases as a panacea for all the country’s ills. The debate comes at a pivotal moment in the race. Polls have shown a tightening in the race.
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