Myth will only do well in liberal dim states.
Not sure on the allocation method used but the following website has a wealth of info about the primary process. The following link is to the GOP delegate allocation section for the 56 entities entitled to send delegates.
http://www.thegreenpapers.com/P12/R-Del.phtml
One more link. The following is a description of the delegate allocation process for 2012.
http://www.thegreenpapers.com/P12/R-Alloc.phtml