WaPo:

Two powerful organizations within the Democratic establishment announced steps Friday that have the potential to provide substantial financial firepower to presidential contender Hillary Clinton by drawing on the support of wealthy donors and corporate interests.

While providing a likely boost to Clinton, both developments also give rival Bernie Sanders fresh fodder to highlight her relationship with Wall Street and other special interests at a time when the two candidates are locked in an intense nomination fight.

Priorities USA Action, the main super PAC supporting Clinton, unleashed a $5 million infusion of spending on her behalf, upending plans to hold its fire until the general election. The move calls attention to growing concern within the party’s leadership that her campaign may be in trouble, and it underscores how crucial several upcoming contests have become in Clinton’s battle with Sanders, a senator from Vermont.