Some of the group's members have donated to his campaign, Day said, but "there's not as much pro-life Democrat money as there is pro-abortion money."
National Right to Life political director Karen Cross told CNA that the group does not contribute directly to candidates, but rather makes "independent expenditures" such as direct mail campaigns.
NRLC does not usually get involved in primaries, she said, but has made an exception for Lipinski whom they have endorsed and previously supported in 2018.
The group has sent mail to "thousands of pro-life supporters in the district," while "encouraging them to support him [Lipinski] in this primary," Cross told CNA.
"Marie Newman is a hardcore, unlimited-abortion-through-birth" candidate, Cross said, noting the difficulty of finding other pro-life Democratic candidates down ballot.
"You've got extreme pro-abortion activists actively working in primaries to get a pro-abortion candidate," she said. "They're spending, together, almost a couple hundred million dollars in elections to get these candidates through."
The group CatholicVote.org also said it will support Lipinski. According to records on OpenSecrets.org, the group's candidate fund made $7,168 in independent expenditures for Lipinski in the 2018 election cycle.
"Dan Lipinski is a pro-environment and pro-labor Democrat. He's been an outstanding friend of the unborn," stated Joshua Mercer, editor of The Loop at CatholicVote.org.
His pro-life stance "drives the abortion lobby crazy," Mercer said, which is why pro-choice groups have rallied behind Newman, "their 'mini AOC'," referring to freshman progressive Congresswoman Alexandria Ocasio-Cortez (D-N.Y.) who has endorsed Newman.
However, in the face of millions of dollars in negative ads, pro-life supporters of Lipinski will have their work cut out for them before March 17.
Unlike in 2018, Newman is reportedly shying away from emphasizing abortion in her challange this year-she apparently instructed reporters in a 2019 interview that they could only ask one abortion-related question, and clarified that "[t]his campaign is about the income divide, paid leave, Medicare for All, the Green New Deal, transportation, and infrastructure jobs, period."
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At the same time, while not talking openly about faith in interviews, she has referenced her Catholic upbringing in recent online ads to emphasize her roots in the heavily-Catholic district.
In one ad, Newman says she was born at Little Company of Mary Hospital in the Evergreen Park neighborhood of south side Chicago, and baptized at nearby St. Barnabas Parish-"just a real south side girl," she is called in the ad.
In another video ad, two Catholic religious sisters gave their endorsement of Newman. Sister JoAnn Persch and Sister Pat Murphy, two Sisters of Mercy based in Chicago, said they would support Newman because of her "incredible power to listen" and because of her presence in the district.
Newman is "touting her Catholic upbringing in an attempt to mask her radical anti-Catholic agenda," Mercer stated, saying that despite her efforts to snag the endorsements of nuns she "will become a rubber stamp for the radical left-wing."
"That's why these groups are pouring millions into this District," Mercer said of outside pro-abortion groups.
"CatholicVote knows this District well. We helped Dan come up big in 2018, and we're working overtime to bring him to victory again," he said.