can attest to this if you take my state of North Carolina for example. Obama lost North Carolina because of his slippage among white women in North Carolina. Every other group he held fast. Furthermore, when Romney and Ryan campaigned in North Carolina, they did not even attempt to bring their message to every ethnic group in the state. They were only appealing to just white people and much of their message was race baiting, which ironically they accused Vice President Biden doing in a stump speech right over the border in Virginia.
If you take a look at the electoral map, the divide in this country and within Congress lies with one region in this conutry which is mainly in the Deep South. The racial divide is in the South which the Republicans pander to with their race baiting.