Another Democrat in the room said the vice president “talked about how the system was rigged against the middle class. He said the economic realities of the middle class are diminishing, and that the average middle-class family is finding it hard to make it economically.”

Biden did not mention his own White House ambitions. But several Democrats at the event were struck by one remark he made about Bill Clinton’s presidency: Three sources there told CNN that Biden said the fraying of middle-class economic security did not begin during President George W. Bush’s terms, but earlier, in the “later years of the Clinton administration.” Biden, of course, could face off against former Secretary of State Hillary Clinton for the Democratic nomination in 2016 if they both decide to run.

Biden’s speech was described, to a person, as “populist.”