Outside one of the main sites of this week's Democratic Party convention, several people were holding placards with graphic photos of aborted human fetuses. The protesters, mostly men, shouted at delegates and others entering the Charlotte Convention Center, accusing Democrats of infanticide.

Some of the party faithful passing by shot back. "Shut up, go away," one person said while a few stopped to debate the anti-abortion demonstrators.

The Democratic Party's national platform for 2012 made public Monday affirms the party's long-held view that women have the right to control their reproductive choices, supports access to affordable family-planning services and vows continued opposition to Republican efforts to defund health care provide by Planned Parenthood.

Tuesday night, First Lady Michelle Obama and a retinue of earlier speakers made clear their party's belief that women have the right to choose.

"Pro-choice" is a phrase long associated with Democrats. Their foes in the anti-abortion movement (which prefers to be called "pro-life") have long gravitated to the Republican Party. The platform adopted last week at the Republican National Convention in Florida calls for an amendment to the US Constitution that would protect "human life". It doesn't state whether exceptions should be allowed in cases of rape and incest.

Just a few blocks from the bustling convention center, a group of Democratic loyalists spoke at a forum on Tuesday about the importance of being "pro-life". They cited increasing support for broader platform language on abortion and said that including it would help Democrats win over voters in the presidential congressional elections.

Kathy Dahlkemper, a Democrat from Pennsylvania who served one term in the House of Representatives before losing to a Republican in 2010, told China Daily that she opposes abortion and wants to see the number of abortions reduced significantly.

According to the Guttmacher Institute, which is affiliated with Planned Parenthood, 1.21 million abortions were performed in the United States in 2008, down from 1.29 million in 2002.

Dahlkemper, while pointing out that the stance in her party's platform is at odds with her own, criticized Republicans for clamoring to cut government-aid programs that help many low-income American women overcome circumstances that often lead to abortion.

She believes the abortion debate has been used by both parties as a political game.

"I think the party structure keeps this issue going because of its ability to raise funds. It's a wedge issue in our political spectrum."

Though she sometimes feels alienated within her party, Dahlkemper said she wants to remain a Democrat because she agrees with policies that favor government funding for postnatal care, health care in general and education.

"We think it's easier to change the Democratic Party on this one issue rather than change the Republican Party on a host of other issues," said Kristen Day, executive director of Democrats for Life of America, which describes itself as "the pro-life voice and wing of the Democratic Party".

Day said her group's view is broader than the standard conservative definition of "pro-life".

"The conservatives just want to overturn Roe v Wade - that's their main mission," she said, referring to the 1973 US Supreme Court decision that guarantees legal abortion. "I would love to do it, too, but they are not addressing root problems of why women choose abortion and we really need to get to those issues."

There are 23 million Democrats who identify themselves as "pro-life," the organization claims.

Carol Stahl, a Democrat from Montana, said she doesn't know any anti-abortion Democrats, but she said she believes there are some, just as there are pro-choice Republicans.

Diane Green, a convention delegate from New York City, said it's wrong for the government to have control over a woman's body.

"It's very harmful, especially to low income people. Rich people will always have choice. They can buy it, and their children can go anywhere they want for any form of health care," she said.

"But low-income people need to use a local doctor. If the doctor is restricted by law, it's a big problem. That's taking away civil rights," said Green, who is black.

A Gallup poll in May found that the number of Americans who identify themselves as "pro-choice" dropped to 41 percent from 47 in July 2011, while half of Americans self-identify as "pro-life". A national survey by the Public Religion Research Institute last year showed that when people aren't forced to declare one position or the other, about 43 percent said they are both "pro-choice" and "pro-life".

chenweihua@chinadaily.com.cn