The Susan B. Anthony List, a group that supports pro-life politicians, has launched a digital campaign tying Democratic senators facing re-election in states that President Donald Trump carried in 2016 to support for late term abortions. On Monday, Sen. Sherrod Brown (D., Ohio), Sen. Claire McCaskill (D., Mo.), Sen. Heidi Heitkamp (D., N.D.), and Sen. Jon Tester (D., Mt.) voted to block a 20-week abortion ban, while Sen. Tammy Baldwin (D., Wis.) and Sen. Bill Nelson (D., Fla.) abstained from voting. While the bill won a majority of senators, it failed to reach the 60-vote threshold to overcome filibuster, effectively killing the legislation. SBA List President Marjorie Dannenfelser said the senators need to be held accountable for their votes.

“The United States remains one of only seven nations in the world that allow cruel late-term abortions after five months of pregnancy,” she said. “Shamefully, Senators Claire McCaskill, Sherrod Brown, Heidi Heitkamp, and Jon Tester voted to keep this horrific practice legal. Senators Bill Nelson and Tammy Baldwin didn’t even show up. They will be held accountable.”

SBA List launched a series of websites targeting McCaskill, Tester, Heitkamp, and Brown as radical—each URL bears the candidate’s last name next to “tooextreme.com”—on the issue of abortion.