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Is it time for President Obama to deliver another of his inspiring speeches?

His approval ratings have dipped in the last month, from 50 percent to 41 percent, according to a new poll by New York Times/CBS News. That’s surprising, given recent improvement in employment indicators and in the overall economy. Gas prices over $4 a gallon likely are hurting him. Obama still edges Mitt Romney head-to-head, though by only 47 percent to 44 percent, according to the poll. (The president beats Rick Santorum 48 percent to 44 percent.)

But can Obama step up to a podium and turn things around? No.