cate blanchett
"Blue Jasmine"
Role: Jasmine (nee Jeanette), a Manhattan socialite now poor and disgraced.
In her favor: She radiates the tense energy of a thoroughbred racehorse, and the spectacle of her designer-label ego disintegrating is mesmerizing.
Then again: No then again. Woody Allen has directed a lot of actresses to well-deserved Oscars, and Blanchett is a cinch to join them.
sandra bullock
"Gravity"
Role: Dr. Ryan Stone, a hyper-competent astronaut terrified to find herself adrift in space.
In her favor: Bullock's heroic character has a tragic back story richer than that of most space explorers. The rigors of her effects-heavy performance are well-known and impressive.
Then again: Though it's a career-best performance in a top-flight role, the academy's prejudice against sci-fi films is a significant hurdle.
judi dench
"Philomena"
Role: Philomena Lee, a real-life Irish retiree in search of the son taken from her 50 years earlier.
In her favor: A resonant character, both a daffy old dear and a wise woman of hard-won dignity. Sublime chemistry with co-star Steve Coogan.