President Barack Obama’s senior adviser and political guru responded to moderator John Heilemann’s poll of the room that all but four people in attendance voted for Obama in 2008 by saying: “We have a very nice room here…not like those folks up in Boston.”

Later, joking about hypothetical Romney trackers in the audience recording his every word, Axelrod added, “At least they’re letting me speak.”

Axelrod’s unprompted asides suggested Romney’s in-person and social media guerilla campaign is taking hold — at least in the cubic foot of space above Axelrod’s shoulders.

Beyond the from the now-infamous press conference, the Romney campaign has deployed campaign staffers to infiltrate Obama campaign events to tweet about empty seats and spin the president’s comments while he’s still in the room. On Twitter, Romney operatives swarm over nearly every Axelrod television appearance to point out flaws and needle him over inconsistencies.