Coal Miners are probably under the Union Thumb and therefore strong democrat supporters.  I doubt that they would turn against a democrat.  They should be wanting jobs and the economy to stay strong for them and hence they should be strong for sound Republican leadership.  I do not know the demographics as they relate to how Northern Virginia voters would feel. Personally, I think that the whole state could go Republican and I think that is what would be best for them. That is how I would vote if I were in Virginia.