Bernie Sanders is not giving up. He is still in this to win, and his campaign is ramping up its rhetoric.

In an email sent out on Wednesday, Bernie 2016 campaign manager Jeff Weaver declared plans to push for a contested convention in Philadelphia in July.

By nominating Hillary Clinton, Weaver insisted, the Democratic Party would be risking “disaster simply to protect the status quo” in the U.S.

“We’re going to have a contested convention where the Democratic Party must decide if they want the candidate with the momentum who is best positioned to beat Trump, or if they are willing to roll the dice and court disaster simply to protect the status quo for the political and financial establishment of this country,” he wrote.

The U.S. political and financial establishment has long made it clear that Clinton is its preferred candidate.

Wall Street has overwhelmingly backed Clinton, an extremely hawkish multimillionaire. Financial executives, including many of those who previously backed GOP presidential hopefuls Jeb Bush and Marco Rubio, have poured millions of dollars into Clinton’s campaign in order to help her defeat Trump.

Many prominent right-wing figures have come out in support of Clinton, calling her “far preferable to Trump” and even “the conservative hope.”

In the latest Sanders campaign email, Weaver cited three polls released on Tuesday that show Clinton facing a potential tough race with Trump in a national election.

A Quinnipiac University poll of crucial swing states found Clinton narrowly winning Florida and Pennsylvania, but losing to Trump by 4 percent in Ohio. Sanders would more comfortably win all three, according to the poll.

“This is pretty scary,” the Bernie 2016 campaign manager said. He posed Sanders as the biggest threat to Trump.

“For months, Bernie Sanders has out-polled Hillary Clinton against Donald Trump, and often by extraordinarily large margins,” Weaver wrote.

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