Their battleground sample - interpret as you wish:
White ...................................................................78%
Black ...................................................................11%
Hispanic .................................................................7%
Other .................................................................... 4%
White at 78%? Huh?
What the heck?
Is it possible that this collection of states is simply whiter than the nation as a whole?
Hmm, perhaps. Then again, it includes states like Florida and Nevada, which are more minority compared to the general electorate, states like New Hampshire and Iowa, which are whiter than the general electorate, and states that are near the national average, such as North Carolina, Virginia, and Colorado.
I wouldn't expect a significant differnce overall.