Nah, Republicans aren't in THAT great of a position electorally since states are still determined by popular vote, and many blue states have cities and liberal enclaves (like college towns) large enough to drown out the Rural vote (for example, Chicago/Champaign-Urbana/East. St Louis and Illinois, Denver and the college towns and Colorado). What happened this election is that the states with declining cities (Detroit and Michigan, Milwaukee and Wisconsin) turned red before the southern states experiencing demographic shifts turned blue (Arizona, Georgia I think, and eventually Texas). Where this does hurt, though, is in controlling state legislatures.