Ideally for my own use, option 2, but option 3 would be really neat.
Option 2 in this poll is "no", whereby the question is, "Delete the question line in polls?" Which means that although the rest of your post shows that you want them removed, you voted the opposite way? I think you've pretty much defeated your own argument.
Anyway, I definitely do not support this. Quite often when people post news articles, they'll put the headline of it in the thread title, and then perhaps an opinion poll attached to it. The poll of course warrants different text to what was put in the title. Also, whereas there is a character limit in thread titles, there isn't one (AFAIK) in poll questions, which means that long questions can be abridged in the title, and expanded in the poll.