By John Stoehr I want to ask whether public opinion surveys, in advance of next week’s elections, might be wrong, but first let me say this: Serious pollsters aren’t biased. Even partisan pollsters work hard to produce reliable numbers. Though they are partisan, the party actors who pay for their information want information that’s more or less accurate. So let’s set aside conspiratorial thinking. Let me also say that by asking whether public opinion surveys might be wrong, I risk encouraging magical thinking. Fact is, the GOP does have a historical advantage. (For two decades, the party contr…