And it is only going to get worse. In 1976 whites went for ford over carter 48 - 52. Blacks and Hispanics went for carter 83 - 17 and 84-16 respectively. The thing is, in 76 whites were almost 90% of the electorate, blacks were 9 and Hispanics a mere 1%
Whites have voted more and more republican in every election since then. In 2012 whites went for Romney 39 - 59, while black and Hispanics went for Obama 93 - 6 and 71 - 27 respectively. Whites have voted more and more republican in only represent of the electorate.
I fear that as the white percentage of the electorate declines, they will vote more republican, creating a clear racial division in the partisan landscape. The map above tells it all, republicans can command a majority of white voters even in liberal California.