Related Clues:

• Blackboard material
• Roof top, perhaps
• Roof material
• Compressed clay
• Election selection
• Roofing material, sometimes
• Election-day list
• Blackboard
• Ballot listing
• Walkway material, sometimes
• Oil-yielding rock
• What makes up the school board?
• River-delta material
• Party's nominees
• E-zine since '96