Related Clues:

• They battle pros
• Oppositionists
• Paul Newman, on a Nixon list
• Dangerous kind of fire
• They just say 'no'
• ___ forces
• Opposite camp
• Pros' foes
• Traitor, e.g.
• __ lines
• 'No' voters
• Nay voters
• The ''other side''
• Opposition force
• One to watch out for