Related Clues:

• Elect (to)
• Settle on
• Back (out)
• Check ''yes,'' e.g.
• Pick, with ''for''
• Make a judgement
• Voice one's opinion
• With 30-Down, kind of clause
• -- for (choose)
• What to do at a crossroads
• Withdraw (with "out")
• ___-in (like some mailing lists)
• Take sides
• Be choosy
• __-out clause