Possible Clues:

• Those people, in reggae songs
• Party LBJ belonged to
• One who's blue, for short?
• Radical anti-Amer. socialist, per Rick Santorum
• Rush target, informally
• LBJ or FDR
• F.D.R. or J.F.K.: Abbr.
• Pres. Carter, e.g
• Not Rep. or Ind
• F.D.R., e.g.