It's a problem that Democrats have nationwide - They want to be the party of everyone, and don't want to possibly make the mistake of taking a stand. That and, despite a good deal of possible bombshells, Nevada Republicans have a solid enough bench.
The Nevada Republicans have nutjobs like that legislator who said he'd bring back slavery if his constituents wanted that. Brian Sandoval seems like a decent guy and I'd to meet him one day. He's going to serve out his second term as governor. My father claims to have known him when he was a Reno lawyer.
As I said, they have PLENTY of potential bombshells. But they also have a lot of talent (Hutchison, Roberson, Heck, ect.)