Jack, Hurley, Desmond, Sun, Jin, Claire, Rose, Bernard & Jacob. (Yes, I know Jacob is "dead" but this is LOST!) I'd also vote for Charlie but he's been long gone, despite this week's episode.
I find it interesting that Kate only got 4 votes (so far) as it seems obvious, at least to me, that the writers want her character to be endearing to us despite her shady background.
And nope, I didn't vote for Sawyer... not because I don't like the character. I just feel like I'd be okay either way with whatever ending the writers choose for him.
And when it comes down to it... the only one I feel very strongly about getting a happy ending is Hugo. I will be sorely disappointed if he doesn't get a happily-ever-after!