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File Photo: Former U.S. President George W. Bush waves as he walks into the White House Jan 8, 2009, on his way to the Oval Office.

Lots of prominent Republicans have weighed in on the 2012 GOP primaries. But one well known politician has been left from the discussion: George W. Bush. Jack Pitney is a professor of politics, an author and a longtime Republican strategist. He joins the show to discuss why Republicans have been mum on the topic of their last successful presidential pick.