Just curious. Any evidence (cites, etc) that Democrats "underpoll" in Nevada? Turnout in Nevada was R+4 in 2004, and as Umengus pointed out, D+8 in 2008. So where are we coming up with this "underpoll" thing (of course, besides your own personal speculation)?
Just simple polling analysis.
2010 Senate:
Average of polls a week before election day: R+3.2
Election day result: D+5.74
2010 Governor:
Average of polls a week before election day: R+18.5
Election day result: R+11.75
2008 President:
Average of polls a week before election day: D+7.13
Election day result: D+12.5