19+ hour, 30+ min ago  (184+ words) Mr. Duke's strongest support came from low- and middle-income whites. He got 56 percent of the vote of whites with family incomes under $15, 000, 63 percent of those making from $15, 000 to $29, 999, and 60 percent of those making from $30, 000 to 49, 999. But 51 percent of whites with…...