HOOKSETT, N.H. — Planned Parenthood is swinging behind Hillary Clinton in the Democratic presidential race and says that won’t mean negative campaigning against her primary opponents.

The endorsement by the group’s political arm marks Planned Parenthood’s first time wading into a presidential primary, and it comes as Clinton remains locked in a tight contest with Bernie Sanders in Iowa and New Hampshire, home of the first two nominating contests. Former Maryland Gov. Martin O’Malley trails both rivals in the race.

Accepting the endorsement Sunday in New Hampshire, Clinton sought to energize her Democratic base with a passionate pledge to always protect reproductive rights. And she painted a dark picture of what women’s health care would look like under a Republican president, singling out two of the top Republican contenders by name.

“Donald Trump and Ted Cruz and their powerful friends may be trying to drag us back to the Stone Age, but we’ve got our sights set on the future,” Clinton said.

Planned Parenthood is a large provider of abortion and reproductive health services and has become a lightning rod in the 2016 campaign. Most Republican presidential candidates object to continued federal financing of the organization and a measure has passed the U.S. House.

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