I just talked to a friend that lives there (unemployed, house worth 1/4 what he paid for it), and he said he had a Dem operative come to his door a couple of days ago. He has never had a Repub come to his door.
2 years ago Harry Reid had to work extremely hard to keep his Senate seat. The Dems probably still have a well oiled machine in NV as a result. There is a Mormon presence in NV but they probably don’t need to be wooed. They would vote for Reid in his race, but probably not for Obama in his.