MS NOW

Why a Mississippi Republican is now a Democrat

When a Republican switches parties and becomes a Democrat, it's rare. When it happens in Mississippi, it's extraordinary. So why did Tim Johnson switch?

Former state Sen. Tim Johnson of Madison, smiles after announcing among representatives of various Mississippi Democratic associations that he is switching from Republican to Democrat to run for lieutenant governor of Mississippi.
Former state Sen. Tim Johnson of Madison, smiles after announcing among representatives of various Mississippi Democratic associations that he is switching from Republican to Democrat to run for lieutenant governor of Mississippi at a news conference at the Capitol in Jackson, Miss., Wednesday, Feb. 4, 2015.AP

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."