Could it be Alaska?
If it were based on which of the LBJ states is most worthy of polling, it would be North Dakota, because of the open Senate race. Although I think Palin leads Obama in Montana...
Montana was once won by Bill Clinton, so we can rule this state out.
PPP once said that they cannot poll North Dakota because robo-polls are only allowed in the state when they are introduced by a live-interviewer - which is more costly. Maybe they paid it on their own to get an early look at the Senate race though ...