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In less than 24 hours, the big three networks have devoted 17 times more coverage to a traffic scandal involving Chris Christie than they’ve allowed in the last six months to Barack Obama’s Internal Revenue Service controversy. Since the story broke on Wednesday that aides to the New Jersey governor punished a local mayor’s lack of endorsement with a massive traffic jam, ABC, CBS and NBC have responded with 34 minutes and 28 seconds of coverage. Since July 1, these same networks managed a scant two minutes and eight seconds for the IRS targeting of Tea Party groups.