"Poll question: Does Heath Ledger deserve an Oscar?"
I think he does, and I think, even if he hadn't died, people would still believe his performance is Oscar-worthy.
Every time I saw Joker, I didn't see Heath. When I saw Morgan Freeman, I saw Morgan Freeman playing Luscious Fox. Heath made me forget he was Heath, he was just the Joker. He was captivating in every scene he was in, and, if you have ever read any of the comics, you know he nailed it. He was the perfect Joker. Flawless.
Consider the type of performances that are nominated every year. There's no reason to think that Heath's ain't seein' them. A nomination and/or win would be much deserved. It's a shame, though, that a lot of people will point to his death as the reason for his nomination, if he does get one.