Anti-abortion groups seeking to build opposition to a reproductive rights measure in Ohio are messaging heavily around a term for an abortion procedure that hasn’t been legal in the U.S. for over 15 years. The opposition campaign and top Republicans increasingly reference partial-birth abortions in ads, debates and public statements. The abortion opponents say partial-birth abortions are an imminent threat if voters approve the constitutional amendment Nov. 7. Partial-birth abortion is a non-medical term for a federally prohibited procedure known as dilation and extraction. Abortion rights group Pro-Choice Ohio says talk of partial-birth abortions is a scare tactic. Constitutional scholars say the amendment would not override the existing federal ban if Ohio voters approve it.