Yes it is possible to be a total racist and yet have a (subordinate) partner who is another race.
Exhibit A: Chuck C Johnson
Exhibit B: Greg Abbott

Greg Abbott is married to a Mexican woman, and Wendy Davis is accusing him of apposing interracial marriage?! https://t.co/efqro5feF1

— Mark Hemingway (@Heminator) October 20, 2014