In the 2000 presidential election, as many as 80% of Muslim voters cast their ballots for George W. Bush. http://christianity.about.com/od/religionandthepresidency/a/muslimvote.htm
I'm not saying this is correct...but elements of Muslim society are very conservative and reject much of the liberal dogma. Palestine and Iraq have changed much of that dynamic.
Getting a picture of what non-AA Moslems in the US are doing in elections is very difficult since there are so few of them and they live in so many places.