Related Clues:

• Pro opposite
• Opposing vote
• One in the clink
• One side in a debate
• Pro and __
• Pro opposer
• Debate position and half of this puzzle's theme
• Argument side
• Flimflammer
• Put something over on
• Start of a Tennessee Williams title
• Take for a ride, e.g.
• Sing Sing inmate
• Four flush
• Inmate