Related Clues:

• Pierce or Polk: Abbr.
• Jackson was the first to become president
• FDR or RFK
• Barack Obama, e.g.
• FDR, JFK or LBJ
• Republican's opponent: Abbr.
• Jackass, politically
• GOP opponent
• Barack Obama, e.g.: Abbr.
• Clinton's party party
• Not like Ike: Abbr.
• Obama, for one
• Boxer from Calif., for instance?
• Liberal, informally
• Like 10-Down: Abbr.