The Academy said on its Web site completed ballots must be returned to the tabulating firm PricewaterhouseCoopers by 5 p.m. on Jan. 23.
Ballots received after the deadline will not be counted.
The 82nd Academy Awards nominations are to be announced Feb. 2 at 5:30 a.m. PT in the Academy's Samuel Goldwyn Theater in Beverly Hills, Calif.
Academy Awards for outstanding film achievements of 2009 are to be presented March 7 at the Kodak Theatre at Hollywood & Highland Center.
The awards show is to be televised live by the ABC Television Network.
Copyright 2009 by United Press International.
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