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2. In 1964, a Democratic President (LBJ) pushed through a civil rights law, which alienated many white Southerners; after this, white Southerners voted Republican in every Presidential election, including 1976 (in which black voters allowed Carter to carry many Southern states despite losing whites quite handily, especially in MS/AL).
Yeah but Carter only lost Whites to Ford by a 5 point margin(52-47%) and Ford did win 16% of the Black Vote which is a pretty high % of the Black Vote nationally for a Republican after 1964-present day.