Politics

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Mitt Romney campaigns in Reno, Nev., in early February. Photo by Emmanuel Dunand/AFP via Getty Images It may be that Mitt Romney's problem, his falling numbers since last week in state and national polls, is his base.

President Obama's overall approval rating has climbed to 50 percent, according to a new poll. Photo by Win McNamee/Getty Images. With the economy showing signs of life, so too are President Obama's re-election hopes, according to a poll released Tuesday…