Washington (CNN) Rep. Dan Lipinski, a centrist, anti-abortion rights Democrat, survived a progressive primary challenge from Marie Newman on Tuesday for his Chicago-area House seat, CNN projects.

Lipinski was ahead of Newman 51% to 49% with 98% of precincts' tallies reported, according to Edison Research. That puts his lead at about 2,124 votes.

His win comes despite an intense effort by pro-abortion rights and women's groups -- including Planned Parenthood, NARAL Pro-Choice America and EMILY's List -- to purge the party of the anti-abortion lawmaker in a reliably Democratic district.

Newman, who told supporters Tuesday night that she was "not quite ready to make a decision" and that she wanted Lipinski to have a "very painful evening," conceded the race in a statement on Wednesday.

"Last night, we wanted to make sure that every vote was counted, that every voice was heard. We believed there was a possibility of victory," Newman said.

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