Know of any good voting software?

If you’re aware of any voting software that would allow me to run a simple poll from my site (and have the results updated in real-time), please send me a link. I haven’t been able to find much and because of that I’m not going to outline the features I’d like to see (I don’t want to put something that I could possibly hack to my liking out of contention right off the bat). If this request turns up no real options, I’ll likely just code my own, but I find it hard to believe that what I’m looking for doesn’t already exist.