Bernie Sanders to delegates: Please don't boo

PHILADELPHIA - Sen. Bernie Sanders asked his supporters not to boo or make other protests on the floor of the Democratic National Convention -- after delegates had already been expressing discontent.

Sanders' campaign emailed delegates at about 4:50 p.m. Monday, half an hour after the opening gavel fell in Philadelphia.

Sanders, who has endorsed his former Democratic presidential primary rival Hillary Clinton, personally asked his base not to protest at the convention.

"Our credibility as a movement will be damaged by booing, turning of backs, walking out or other similar displays," Sanders wrote. "That's what the corporate media wants. That's what Donald Trump wants. But that's not what will expand the progressive movement in this country."

On the floor of the convention, delegates and attendees erupted into competing chants of "Bernie" and "Hillary" multiple times, including once when Clinton's name was mentioned in an opening prayer.

Speakers repeatedly asked Democrats to join together in a display of unity, and to respect both candidates.

Sanders was expected to speak at the convention later that evening.

The full email is copied below:

Dear Bernie 2016 Delegate,

Thank you so much for your efforts on the campaign and your hard work to advance the political revolution. We have accomplished much. Much more needs to be done.

The political revolution is not about one election or one candidate. It is about transforming America and continuing the fight for economic, social, racial and environmental justice. We have to continue to work together to advance the progressive future we all support.

During this convention you represent not just the 13.3 million who voted for our campaign. You also represent the future of our movement.

I am asking all of us to bear that in mind while we are on the floor of the convention. Our credibility as a movement will be damaged by booing, turning of backs, walking out or other similar displays. That's what the corporate media wants. That's what Donald Trump wants. But that's not what will expand the progressive movement in this country.

I know everyone is frustrated, especially by the recent DNC email disclosures. But, as a result of this disclosure Debbie Wasserman Schultz was forced to resign. This is a very positive sign.

We have made great progress in the last year. Let's continue going forward.

I would ask you as a personal courtesy to me to not engage in any kind of protest or demonstration on the convention floor.

In solidarity,

Bernie Sanders