At this week?s conference of the progressive Campaign for America?s Future, prospective Democratic presidential candidates presented their credentials in a testimony of how the organization?s influence and clout have grown in the party.

The headliners included the current frontrunner in the polls, Sen. Hillary Clinton, 2004 nominee Sen. John Kerry and the emotional favorite on the Democratic left, Sen. Russ Feingold, as well as a who?s who of the progressive activist community.