A few days ago, I stumbled into the website of the Pew Forum on Religion & Public Life ([URL=http://pewforum.org/]http://pewforum.org/[/URL]) and found a landscape survey from early 2008. Curious, I checked it out.
[URL=http://religions.pewforum.org/]http://religions.pewforum.org/[/URL]
I found the Maps rather interesting. For example, under Religious Groups, select Mormon Tradition. You can also select individual states.
Well, I found it interesting, anyway. Thought I'd share. One nice point I found was "Views of One's Religion as the One True Faith," where 70% believed other religions can lead to eternal life. I was a bit surprised by that; I figured it would have been smaller.
Mississippi has the highest absolutely certain belief in God, with 91%