Related Clues:

• Pro's adversary
• Voting "no"
• Opposition party member
• One on the con side
• Pro challenger
• One who opposes
• Naysayer's view
• Prefix for "disestablishmentarianism"
• In the con camp
• Part 3 of today's quote
• Like some activists
• Prefix for lock
• Cell dweller
• Voting "nay"
• Pro's opponent