Mike Huckabee Drops Out of the Presidential Race.The following video is from MSNBC's Primary Coverage, broadcast on March 04, 2008 V O T E F O R R O N P A U L F O R U S P R E S I D E N T 2 0 0 8Gravel Ron Paul Kucinich Hillary Clinton Barack Obama John Edwards Rudy Giuliani Huckabee McCain Fred Thompson Mitt RomneyJoe Biden Hillary Clinton Christopher Dodd John Edwards Mike Gravel Dennis Kucinich Barack Obama Bill Richardson Republicans Rudolph Giuliani Mike Huckabee Duncan Hunter John McCain Ron Paul Mitt Romney Tom Tancredo Fred Thompsonconservatives constitutionalists election 2008 presidential election primaries Republicans Ron Paul