Difficult choices! And yet...

[elisi]

He's up against Buffy! Which, you know, conflict of interest. I absolutely understand why you'd vote for her (or just abstain *g*). But she won last year!

If you want reasons to vote for Eleven, then flameish wrote some amazing meta on the character. It does contain major spoilers for everything aired so far though, so if you want a simple, short answer:

HE SAVED THE UNIVERSE BY BEING KIND!

And that's why he's my Doctor, and that's why he got my vote. (Even against Buffy. EVIL POLL IS EVIL!)