(ABC News)

President Obama's senior campaign adviser David Axelrod this morning dismissed suggestions that the Obama campaign was facing an enthusiasm gap and took the opportunity to verbally poke the Romney campaign over the size of its  event crowds on "This Week."

"In Virginia, there was an overflow crowd.  And that's the way it is.  But the fact is that 14,000 is 11,000 more than the largest crowd that Mitt Romney has ever drawn," said Axelrod. "I am certain that we are going to have an enthused volunteer core and enthused electorate out there. The thing that we've seen over time is that Republican enthusiasm has dropped precipitously, partly because what we've seen from Governor Romney is all negative."

Axelrod was responding to my question about the 4,000 empty seats left empty at The Ohio State University yesterday, during an event that marked the official launch of the president's re-election campaign. He also announced that the Obama campaign would be unveiling a new advertising campaign this week that showcases the president's record after I asked when the Obama campaign would be running advertisements promoting the president's record.

"You'll see us unveil an advertising campaign, an extensive advertising campaign, that is very much about where we were and where we've come and the things that we've accomplished, the revitalization of the auto industry, the distance we've traveled from when we were losing 800,000 jobs a month, the fact that we're safer today because bin Laden is gone, that the war in Iraq is over, and - and many other things that we're proud of and that speak to the progress that we've made since this president was elected," said Axelrod.