Planned Parenthood announced Thursday that it will endorse Hillary Clinton in the 2016 presidential election.

The nonprofit's advocacy arm is scheduled to officially endorse Clinton at an event in Manchester, New Hampshire on Sunday, marking the first time that the 100-year-old organization has endorsed a candidate in the primary. The endorsement will also launch the Action Fund's efforts in the current election season.

"Let's be clear - reproductive rights and health are on the ballot in 2016," said Planned Parenthood President Cecile Richards in a statement sent to Latin Post. "We're proud to endorse Hillary Clinton for President of the United States."

"No other candidate in our nation's history has demonstrated such a strong commitment to women or such a clear record on behalf of women's health and rights. This is about so much more than Planned Parenthood. Health care for an entire generation is at stake," she added.

Clinton said she was "honored" to have the support of Planned Parenthood, one of the leading providers of health services to women, including cancer screenings and abortions. She also vowed to defend the women's health group from congressional Republicans who want to defund it. Most recently, the Republican-controlled House voted to pass a bill that would repeal the Affordable Care Act and cut federal funding for the women's group.

"There has never been a more important election when it comes to women's health and reproductive rights-and Planned Parenthood's patients, providers, and advocates across the country are a crucial line of defense against the dangerous agenda being advanced by every Republican candidate for president," said the Democratic front-runner in the statement.

Clinton, a staunch supporter of abortion rights, also showed her gratitude for Planned Parenthood's support on twitter.

The Planned Parenthood Action Fund plans to spend $20 million on presidential and Senate races the 2016 election cycle, which will go towards key battleground states like New Hampshire, Pennsylvania and Wisconsin.