Plenty of people though, in the US, televised, they aren't gonna be that picky I'd assume.
I really don't see how you can rule out extreme Islamist's all considering, its not like they haven't earned/don't deserve this bad reputation. Even though the Taliban has denied involvement that still doesn't mean it wasn't Islam extremists, like I say they could be working on their own.
They have gotta be front runners alongside some other possibilities.