If Bernie Sanders wants to have influence over the Democratic Party in the future he shouldn't be a “sore loser,” says Democratic strategist Peter Fenn.

“You want to take what you've garnered into policy debates, into getting things done that you believe in next year,” Fenn said. “The best way to do that is not to be out there on the outskirts and to be a sore loser.”

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Fenn said he thinks Sanders, who is behind Hillary Clinton in the race for delegates, can play a role in the fight for the White House even if he loses the Democratic nomination. Watch the video for more.