Voters head to the polls Tuesday to make picks in the Democratic and Republican primaries in congressional, legislative and local races and the GOP Senate contest. Former Congressman Dave Weldon and tea party favorite Mike McCalister are challenging a heavy favorite in U.S. Rep. Connie Mack IV in the Republican Senate race.

Mack's famous name and better-financed campaign gives him an advantage in the GOP contest where the winner goes on to challenge Democratic incumbent Bill Nelson in November. Nelson is seeking a third term in the U.S. Senate. Nelson holds the seat that Mack's father, Connie Mack III, held for a dozen years before retiring after serving two terms.