MANCHESTER, N.H. — The establishment still hasn’t saved Hillary Clinton in New Hampshire.You wouldn’t know it based on her repeated reminders that she’s polling about 20 points behind Bernie Sanders in this first-in-the-nation voting state — or on her exhortations that she’s no establishment candidate — but the former secretary of state, senator and first lady has nearly the entire roster of the state’s high-profile Democratic leaders on her side, from the governor on down.It might not be enough.Political muscle-flexing displays like the one here at the state party’s dinner on Friday night just hours after Clinton appeared at yet another rally with leading Democratic women like New Hampshire Governor Maggie Hassan and Senator Jeanne Shaheen, haven’t helped her catch up to the underdog Vermont senator with just days left in the primary contest, in which she’s trailing badly.A big loss in New Hampshire, coming on the heels of Clinton’s skin-of-her-teeth win in Iowa, could set off a fresh round of Democratic freakouts about her candidacy, particularly as national polls show the primary race tightening across the board.