John Brummett deconstructs the Rasmussen Poll, which shows even a nutcase unknown Republican ahead of Sen. Blanche Lincoln, and concludes that it tends to favor Republicans because of screening and questioning techniques.
He's not arguing that she's not in trouble, by the way. He figures she's still in a statistical dead heat -- rather than trailing -- an unknown teabagger. Not exactly robust.
UPDATE: Here's numbers cruncher Nate Silver's interesting take on the Rasmussen results nationally. He thinks they could be a product of one-night polling that tends to emphasize feelings of tuned-in and energized voters. This isn't necessarily a pollster bias. Enthusiasm for anybody but Blanche DOES seem to be high in Arkansas.