Haha, Republicans keep hoping minorities voted because of Obama's "demographics". A landslide is coming folks.
There is some truth to it, at least with African-Americans. Though I doubt there were many otherwise conservative blacks who voted Obama solely due to race (as closet racists like to crow about), the idea of a black president clearly got many non-voters to turn out; black turnout in 2008 and 2012 was much higher than in prior years, even if Obama didn't do exceptionally better percentage-wise than Gore and Kerry did. In 2016, the black vote will obviously remain ironclad Democratic, but the depressed turnout will probably keep NC and GA red and possibly swing back Virginia and even Ohio.
You could be right about that, but black turnout in GA didn't fall very much in Georgia during 2010. That year the black vote was 28% of the electorate compared to around 30% in 2008 and 2012.