Can Derby Win By Only Winning Washoe County?

When looking at the results at CNN and at the SoS site, Jill Derby is really close to Dean Heller. They're only about one percentage point apart right now. I'm wondering whether it will be enough if she only carries Washoe County. Derby currently holds a clear lead in Washoe County, while Heller is ahead in the other ones where results are known. Interestingly, Washoe County decided the Republican primary for Heller. Let's see what happens tonight.