South Carolina’s looming Senate debate on an abortion ban that would no longer include exceptions for pregnancies caused by rape or incest is likely to feature Republicans facing off against each other Wednesday.

On one side is a core group that views any abortion as ending a life. On the other are conservatives who have digested developments elsewhere since Roe v. Wade was overturned and say they don’t want 14-year-old rape victims to have to give birth, or force a mother to carry to term a fetus unable to live outside the womb.

Debate on the Senate floor started Wednesday morning. Senators have been told the proceedings could last days, although they have recently tried to conclude such debates in marathon one-day sessions. If the legislation is approved and signed into law, South Carolina would join Indiana as states that have passed near-total abortion bans since the Supreme Court overturned Roe v. Wade in June.

In the first hour of debate, all three Republican women in the Senate rose to speak against the bill unless the rape and incest exceptions are restored.