Dana Milbank has the evidence:

For the past few years, liberal activists have gathered in Washington each spring for the Take Back America conference.…

But now that Obama has actually taken back America, the activists at this year’s gathering feel a bit like the dog that finally caught up with the car. Organizers changed the name from Take Back America to America’s Future Now, but that didn’t prevent a sharp decline in participation. …

Hickey estimates attendance dropped from 2,500 last year to 1,500 this year, and even that may overstate things. At yesterday morning’s four concurrent “issue briefings,” 585 chairs were set out. Only 213 of them were occupied, including just 15 for the session on global warming.