(CNN) - Democratic incumbent Sen. Barbara Mikulski has won her bid for re-election to a fifth term as Maryland senator, CNN projects, beating out Republican nominee Eric Wargotz. Projections are based on CNN analysis of exit poll data.

(CNN) - Republican incumbent Sen. Richard Shelby has won a fifth term to his Alabama seat in the U.S. Senate, CNN projects, beating out Democratic nominee William Barnes. Projections are based on CNN analysis of exit poll data.