We’re one day closer to this Sunday’s Oscars, which means Peter Travers is engaging another close race. Today, he looks at the Best Supporting Actress category. Will it be Cate Blanchett in I’m Not There, Ruby Dee in American Gangster, Saoirse Ronan in Atonement or Tilda Swinton in Michael Clayton? To hear the Rolling Stone film critic’s arguments, click here, and be sure to tune in tomorrow for his thoughts on who should win the award for Best Actor.

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