I made a thread about this, but most likely it was one of the editors who did the triple-checking late in the process who inserted the mistake. We don't know if the last person to see the ballot was a (D) or (R).
I still want to know whether they got Obama's name right on the Working Families line. Since nobody has said it was Osama on that line too, I assume that they got it right. If they did, it was probably an honest mistake.
As I said before, the B is not near the S, but the A is right next to it. And distorted faxes can make b look like s . It's still unacceptable - but since the County Boards of Election are made up of a Democrat and Republican, it likely wasn't political.