"I think she should resign, period,” as chair of the DNC, Sanders said on ABC's "This Week."
Sanders says he is “disappointed” by what the leaked emails show but “not shocked.”
Several of the emails released indicate that the officials, including Chairwoman Debbie Wasserman Schultz, grew increasingly agitated with Sanders and his campaign as the primary season advanced.
One email exchange suggested bringing up Sanders’ religious beliefs as a way to hurt his campaign in parts of the country.
Amy Dacey, CEO of the DNC, subsequently responded “AMEN,” according to the emails.
Brad Marshall did apologize to Sen. Sanders, and Clinton campaign manager Robby Mook told Stephanopoulos that apologizing is an “appropriate step.”
He continued that “Obviously, nobody should -- in politics -- be attacked for their religion, ever. And I think the DNC needs to get to the bottom of the facts and then take appropriate action on any of these emails.”
In the wake of the email leak, Democratic Party officials are negotiating to significantly downgrade the public role of Wasserman Schultz at the convention, according to a top Democratic Party source. Party officials are considering as one possibility finding someone besides the DNC chairwoman to preside over the convention, possibly by naming a new permanent chairperson for the convention but not for the Democratic National Committee itself, the source said.
The party’s officials fear that displaying Wasserman Schultz in a prominent role would lead to booing on the convention floor from Sanders’ supporters and delegates.
“Right now we have got to defeat Trump, we have to elect Hillary Clinton,” he said. “We have to elect progressive candidates in the house, and in the senate, and school boards, and city councils. And most importantly, we have got to continue the fight for an agenda to create a government that works for all of us, and not just the people on top…that is the mission I will be undertaking”
Sanders also dismissed attempts by Donald Trump to woo his supporters.
"I can't speak for 13 million people, but I think most of my supporters understand Trump has got to be defeated," Sanders said. "We need to elect as many progressives as possible."