Maybe: From Newsbusters:

Imagine if a bunch of disgruntled Mitt Romney supporters were currently stalking John McCain or Republican events loudly demanding that their candidate be nominated. Think the national press would be featuring it bigtime as an example of Republican party disunity? Well, the same thing is happening except the people are disgruntled Democrats expressing their opposition of Barack Obama while loudly continuing to support Hillary Clinton. They are known as PUMA (”People United Means Action” or “Party Unity My Ass”). PUMA was formed last month in the aftermath of Hillary Clinton conceding the Democrat nomination to Obama. However, contrary to being just a desperate last gasp by Hillary’s supporters, PUMA activities seem to be surging lately despite the overseas trip by Obama which was widely heralded by the mainstream media. In fact, the official PUMA PAC website has today announced, in a message directed towards Obama campaign strategist David Axelrod, their view that the Obama trip was a “flop”:

Curious. I’ve been wondering what drives this particular movement. Is it just bitter Clinton supporters? Or are there some staunch Dems who really are unhappy with Obama and the manner in which he will have obtained the nomination. Maybe both? And what will happen after the convention? Will they just come home as most Dem talking heads are saying?