Nevadas populaton has increased since 2000. The majority of these hae been from California.
I disagree that this has necessarily made Nevada more Democratic. Think about the sort of people who are going to move to Nevada. They:
1. Have the means to pick up and move to a new place
2. Want to live in a place with very low tax and small government
3. Are running away from California's high-tax liberal nightmare.
However, I agree that Kerry has a very good chance in Nevada.
I will agree that some people may run away from taxes, but I really don't think it's THAT many. The Las Vegas area is growing rapidly, the rest of the state is republican. I think Nevada may be the absolute hardest to predict this year. It may actually come down to Nevada. If everything stays the same as 2000, with Kerry picking up NH and WV in the east, by late at night on election night it will come down to Nevada (considering most of the west obviously leans one way or the other).