What is garbage is the notion that any poll showing Republicans trailing is incorrect. Anyone who knows anything about polling knows that the top line isn't really padded by the sample, since PPP doesn't call people based partisan ID, they only ask the question.
lol
I remember a VA PPP poll in 2009, after the thesis controversy, showing McDonnell falling (compared to their last poll). In fact, his decline was 100 % due to the greater proportion of democrats in their poll than previous... It was an outlier (wanted or not). In the next poll, with proportion of democrats declining, MCDonnell comes back to his previous advantage and destroyed his opponent in november. Of course, the story was: thesis controversy hits Mcdonnell. Poll proves it.
PPP is a democratic and a partisan firm, ready to make push polls and others... but not stupid to lose credibility giving a fake LAST poll result.