The Pulitzer committee loves a curveball, but I think it's a given that Liberation will be either the winner or a finalist. Other plays I could imagine as contenders:
The Antiquities
Caroline
Cold War Choir Practice
Grief Camp
Meet the Cartozians
Practice
Prince Faggot
We Had a World
Well, I'll Let You Go
"You travel alone because other people are only there to remind you how much that hook hurts that we all bit down on. Wait for that one day we can bite free and get back out there in space where we belong, sail back over water, over skies, into space, the hook finally out of our mouths and we wander back out there in space spawning to other planets never to return hurrah to earth and we'll look back and can't even see these lives here anymore. Only the taste of blood to remind us we ever existed. The earth is small. We're gone. We're dead. We're safe."
-John Guare, Landscape of the Body