Join McClatchy's Alex Roarty, Adam Wollner, and David Catanese as they mark the official end of the Democratic presidential primary — and the beginning of the general election. We'll discuss why progressives say they are still optimistic about the future despite Bernie Sanders' defeat, why Joe Biden's problem with the left isn't going away anytime soon, and whether former President Barack Obama will have much of an impact on the 2020 race.

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