Crucial voters in US swing states are being urged to "vote anti abortion" ahead of the presidential election next month.

Explicit images of aborted foetuses will be displayed across Pennsylvania, Ohio and Florida from Monday onwards in a move to shock Americans into voting for "anti abortion candidates". The campaign director denied it was open support for Republican candidate Donald Trump but admitted Democrat Hillary Clinton wanted to increase abortion provision.

Mark Harrington, national director of Created Equal, who will run the campaign, told Christian Today that as a non-profit organisation they could not openly support one candidate.

But he added tacitly: "Hillary supports late-term abortion and wants to repeal the long standing prohibiting against federal tax funding of abortion.

"Donald Trump has pledged to defund Planned Parenthood and sign a ban on abortions committed after 20 weeks."

Hundreds of thousands are expected to see the plane banners, billboard trucks and TV screens that will feature the photos. Harrington defended the use of shocking images by pointing to research that suggested it persuaded voters against pro-abortion candidates like Clinton. 

"Recent statistical data confirms what pro-lifers have witnessed for decades: seeing abortion victims alters how individuals feel about abortion—which in turn influences how they think about abortion, including their political views," he said.

"We are facing the most important election of our lifetime. Our nation's fate and the lives of millions of preborn children hang in the balance this election," he continued. "2016 is a turning point for America. We are on the streets, on the road and in the air. Our comprehensive outreach campaign will educate thousands of voters in battleground states."

He told Christian Today the campaign was meant to "educate voters about abortion killing" but not persuade them towards one particular candidate.

"We leave the decision up to the individual voter to reason to the most humane conclusion for president and for all the offices represented on the ballot."