"North Carolina had been reliably Republican for more than two decades. Even Bill Clinton, a Southerner who managed to carry other Southern states, fell short in North Carolina. But over the past few decades, the state’s economy has become much more diversified, remaking the state’s political landscape.
Longtime economic engines in the state, like tobacco, textiles and furniture, have been fading, while newer sectors — like banking, biotechnology, pharmaceuticals and telecommunications — have been growing. New kinds of jobs have attracted new kinds of voters, and North Carolina is younger, more diverse and better educated than it used to be.
But Mr. Obama’s 2008 victory in North Carolina came early. Favorable political conditions nationally and a substantial surge in turnout pulled the state into the Democratic column ahead of schedule. North Carolina, while more competitive than it used to be, is still to the right of the national tipping point, and Mitt Romney has had a slim lead in most surveys of the state conducted this year."