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Senator Paul becomes Doctor Paul

In Rand Paul's case, there's also a downside to reminding people about his medical background.

Sen. Rand Paul (R-KY) delivers remarks while announcing his candidacy for the Republican presidential nomination during an event at the Galt House Hotel on April 7, 2015 in Louisville, Ky. (Photo by Luke Sharrett/Getty)
Sen. Rand Paul (R-KY) delivers remarks while announcing his candidacy for the Republican presidential nomination during an event at the Galt House Hotel on April 7, 2015 in Louisville, Ky.Getty Images

Steve Benen is a producer for "The Rachel Maddow Show," the editor of MaddowBlog and an MS NOW political contributor. He's also the bestselling author of "Ministry of Truth: Democracy, Reality, and the Republicans' War on the Recent Past."