A number of closely contested Senate elections also featured abortion as a prominent issue.
Democrat incumbent Joe Donnelly lost his Indiana seat to Republican challenger Mike Braun. Braun continually raised Donnelly's voting record on abortion during a debate between the candidates, who were polling neck-and-neck.
Similarly, North Dakota Senator Heidi Heitkamp lost her seat to a pro-life challenger, Kevin Cramer. Despite running six years ago as a candidate opposed to government funded and late-term abortions, Heitkamp had a 100% voting record score from Planned Parenthood, and repeatedly cast her ballot to continue funding the abortion provider.
Jeanne Mancini, President of March for Life, told CNA that although the Senate appears to have a solidly pro-life base of members, results in the House of Representatives were a source of concern.
"Now that Democrats control the House, we can expect the Committee Leadership to fall in line with the pro-abortion lobby, pushing an extremist agenda that undoubtedly includes undoing all the pro-life progress made by this administration."
Mancini expressed her hope that any change in priority by in the House would be offset by strong action by the Trump administration.
"President Trump should by default issue a veto threat any time pro-life policies are stripped from legislation and continue to appoint pro-life leaders to fill critical positions within the administration."
Despite these concerns, some pro-life victories were won in the House of Representatives too.
Rep. Dan Lipinski (D-IL), one of the few staunchly pro-life Democrats in Congress, faced an intense challenge primary challenge, during which his opposition to abortion was repeatedly targeted by members of his own party.
In Tuesday's vote Lipinski was easily reelected to his 7th term in Congress with 73.5 percent of the vote. Lipinski's opponent, Arthur Jones, had been disavowed by the Illinois Republican Party due to his self-professed Nazi views.