From Larry King Live April 28, 2009. While discussing Arlen Specter's defection from the Republican party, David Gergen has to explain to Dana Perino what the term "big tent" means. I love the pinched look he got on his face while she was spouting her nonsense. Hint to Dana...it doesn't mean all moderates. And I hate to break it to you there girly but the idea that there's a chance in hell of your party even becoming slightly more moderate right now looks laughable at best.