Elizabeth Warren has reversed her stance on outside money, refusing to disavow a super PAC now running ads for her benefit, ending a long-held policy of eschewing third-party aid in her grassroots-driven presidential campaign.

“If all the candidates want to get rid of super PACs, count me in. I’ll lead the charge,” Warren told reporters Thursday in Nevada. “But that’s how it has to be. It can’t be the case that a bunch of people keep them and only one or two don’t.”

Her switch comes as a group called Persist PAC began running television ads in Nevada Wednesday portraying the Massachusetts senator as a fighter who took on Wall Street and highlighting her connection to former President Barack Obama, who selected Warren to set up her much-championed Consumer Financial Protection Bureau.

It’s a seismic shift away from what has long been a staple of her presidential campaign — not accepting contributions from political action committees or allowing aid from super PACs that can raise and spend unlimited funds.

And it comes after months of routinely ripping her rivals for courting high-dollar donors at private events. Despite the emergence of the super PAC, she continued to claim the high ground Thursday in a tele-town hall with South Carolina voters.

“My campaign is entirely grassroots funded,” Warren said on the call. “I don’t spend my time in wine caves and I don’t spend my time behind closed doors with rich and fancy people. I spend it all with people whose lives are going to be so deeply affected by this election.”

Warren has for months now incorporated the wine cave jab — a reference to a California fundraiser attended by Pete Buttigieg — into her stump speech, calling the former South Bend, Ind., Mayor out over it during the December presidential primary debate.

Buttigieg responded by accusing Warren of “issuing purity tests you cannot yourself pass.”

Warren’s changing stance comes as she remains a distant third in the delegate race for the Democratic presidential nomination after lackluster showings in Iowa and New Hampshire. Renewed buzz following her fiery debate performance Wednesday in Las Vegas may have come too late to give her much of a boost in Nevada’s caucuses Saturday, after more than 70,000 ballots were cast in an early voting period that ended Tuesday.

The Massachusetts senator is far from the first candidate to accept aid from a super PAC this cycle. Former Vice President Joe Biden, who initially rejected such help, is now being buoyed by super PAC Unite the Country. The super PAC Reason to Believe sought to boost former Massachusetts Gov. Deval Patrick’s bid before he dropped out. And the Kitchen Table Conversations PAC is now running ads in Nevada and South Carolina to support U.S. Sen. Amy Klobuchar.