(Getty Images)

(CNSNews.com) -- Four U.S. politicians, including two Democrats, will speak at the 2019 March for Life, joining an estimated 100,000 Americans who will gather on the National Mall in Washington, D.C. on Friday, January 18 to peacefully protest legal abortion.

In a bipartisan show of support for the pro-life movement, U.S. Rep. Dan Lipinski (D-Ill.) and State Rep. Katrina Jackson (D-La.), will join U.S. Sen. Steve Daines (R-Mont.) and Rep. Chris Smith (R-N.J.) onstage at the national march.

Pro-life politicians are rare in the Democratic Party, which generally maintains that a woman’s “right” to have a “safe” and legal abortion is non-negotiable, and ostracizes those who disagree.

House Rep. Dan Lipinski (D-Ill.) (YouTube)

Rep. Lipinski, who has attended the March for Life in previous years, skipped last year’s national march during a tough primary in which he ran against a pro-choice challenger and faced attacks from pro-abortion groups such as NARAL Pro-Choice America, Planned Parenthood Action Fund and EMILY’s List. Despite the pressure, Rep. Lipinski still attended last year’s Chicago March for Life.

March for Life President Jeanne Mancini said she was “delighted” that the four politicians would appear at the march, and added that the right to life “is a non-partisan issue.”

“We are delighted to have these four pro-life champions speak at the March for Life rally,” Mancini said. “The right to life is a non-partisan issue and, regardless of politics, we should all unite for life and stand against abortion, the greatest human rights abuse of our time.”

The theme of this year’s March for Life is “Unique from Day One: Pro-life Is Pro-science,” and will emphasize the ways in which modern science supports the pro-life movement.

State Rep. Katrina Jackson (D-La.) (YouTube)

Held annually since 1974, the March for Life has become the largest human rights demonstration in the world. It takes place in mid-January, around the anniversary of Roe v. Wade, the 1973 Supreme Court decision that legalized abortion in all 50 states.

Since Roe v. Wade, an estimated 60 million babies have been killed by legal abortion in the United States.