Well, there's a lot of people in Texas. If you choose to interview only one person, then it should be possible to find some dumbass Democrat willing to pretend that he is a Republican.
Man in the street interviews are one of the oldest techniques of press bias in existence. Just keep interviewing one person after another until you get the answer you want, and then discard the rest. Or just invent a person and make the whole thing up, as the New York Times has done from time to time.
Jason Blair Syndrome.