They know Obama effed up with "you didn't build that"

Context, schmontext. "You didn't build that" continues to haunt the Preezee of the United Steezee. Yes, we noticed this too.

Nevertheless, there are signs that they see a vulnerability. Obama has not repeated the words that sparked the controversy, and he has toned down the broader argument — that government help is essential to business success — in the six weeks since he ad-libbed the line near the end of a long campaign swing. His speeches have been shorter, with fewer references to wealthy Americans. He is more cautious about portraying the choice that he quite forcefully described that night between Romney’s worldview and his own.

Shorter Obama speeches is an immediate positive effect.

It doesn't matter what Plouffe and Axelrod say in the attempt to spin this mistake. It was a major one, it slipped out when Obama was tired and unguarded at the end of a long day, as the article points out. The "We built this" response is short, pithy, and it resonates with likely voters. We're not stupid.