Related Clues:

• Something to cast
• List in a booth
• It may be marked with an X
• Second-largest continent
• Vote
• One of the five Olympic rings
• Site of ancient Utica
• Chad's home
• Serengeti setting
• Djibouti's place
• South ___
• Where Spaulding and Livingstone explored
• See 10 Across
• Poll
• See 24 Across