Fredreka Schouten

USA TODAY

WASHINGTON – Planned Parenthood’s political arm is ramping up its spending to influence the increasingly competitive North Carolina Senate race.

Planned Parenthood Action Fund has added the contest between Sen. Richard Burr, R-N.C. and Democrat Deborah Ross to its North Carolina voter outreach, as the group undertakes the largest field effort in its history.

In all, the group plans to spend $30 million to sway the 2016 election, double its spending in 2012. It’s working to reach 3 million voters to tip races to Democrats in North Carolina and five other battlegrounds: New Hampshire, Nevada, Wisconsin, Pennsylvania and Ohio.

The group has 800 paid staffers and another 3,500 volunteers on the ground, with the goal of talking to 2 million voters through door-to-door canvassing, said Deirdre Schifeling, the group’s executive director. The budget and activist force make Planned Parenthood’s push one of the biggest door-to-door operations undertaken by an outside political group this cycle.

Schifeling said activists already have knocked on about 800,000 doors and found that about 30% of the voters they talk to are undecided in the presidential contest between Democrat Hillary Clinton and Republican Donald Trump.

“The contrast between the two candidates on women’s health issues hasn’t sunk in,” she said.

The group’s all-out push for Clinton reflects the high stakes of the election. The Senate has refused to take up President Obama’s nominee to fill a vacant seat to the Supreme Court, likely leaving the pick to the next president.

All six states targeted by Planned Parenthood are crucial to the presidential contest, and this year also are home to hotly contested Senate races.

North Carolina offers a trifecta: