Do Obama's Polling Expenses Reveal Panic?

In 2008, the Obama campaign spent, on average, $1.5 million per month in polling expenses and surveys.  This year, the monthly average is about $2.5 million; with $2.6 million being spent in June, alone.

Certainly, if the Obama campaign was confident of winning, it would be polling more in line with 2008.  But, this big and consistent increase in this expense reflects a lack of confidence; maybe even panic.  Just like a man who is constantly looking at his watch when he's knows he's definitely going to be late in getting to an important meeting or appointment.