From only 2 years ago:

Nearly 20 Percent of Americans Think Interracial Marriage is ‘Morally Wrong,’ Poll Finds

Seventeen percent of respondents said interracial marriage was “morally wrong” while 83 percent said it was “morally acceptable.” There was a bit of a divide along party lines on the subject, with 28 percent of Republicans and just 12 percent of Democrats replying that interracial marriage was morally wrong.