Answer:

slates

Answer	Crossword Clue
SLATES	Blackboards
SLATES	Lists of candidates
SLATES	Schedules

SLATES	Bluish-grays
SLATES	Pavement pieces
SLATES	Roofing pieces
SLATES	Candidate lists
SLATES	Political candidate lineups
SLATES	Puts on the agenda
SLATES	Candidates lists
SLATES	Old-time school gear

SLATES	Political tickets
SLATES	Ballot rosters
SLATES	Agendas
SLATES	Groups of runners
SLATES	Nomination listings
SLATES	Puts on a schedule
SLATES	Tablet computer ancestors
SLATES	Lists of political candidates

SLATES	Roofing tiles
SLATES	Parts of some roofs
SLATES	School boards
SLATES	Schedules.
SLATES	Reprimands.
SLATES	Lists of candidates.
SLATES	School gear in Tom Sawyer's day.
SLATES	School gear in Huck Finn's day.

SLATES	Designates for action.
SLATES	Election lists.
SLATES	Political line-ups.
SLATES	Schoolroom appurtenances.
SLATES	Political lists.
SLATES	Writing surfaces.
SLATES	Blackboards.
SLATES	Designates for office.

SLATES	Roofing tiles.
SLATES	Roofing material.
SLATES	Bookmakers' lists.
SLATES	Writing tablets, old style.
SLATES	Candidate lists.