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Here comes another one: Former Pennsylvania Senator Rick Santorum officially entered the 2012 presidential race on Monday. The conservative icon, who also flirted with a run in 2008, threw his hat in the ring for the Republican nomination during an interview on Good Morning America. Later, he gave a speech in Somerset, Pa., in which he praised the Tea Party and accused President Obama of devaluing the dollar and “our moral currency.” The latest Gallup survey of the GOP field shows Santorum polling at just 2 percent, well behind top contenders like Mitt Romney and Sarah Palin.