The Missouri House has endorsed legislation that would make a woman seeking an abortion wait 72 hours after seeing a doctor before the procedure could be performed.
Missouri's current waiting period is 24 hours. Only two states now mandate a three-day wait.
The House voted gave the bill first-round approval Wednesday on a 115-37 vote. It needs a second vote to move to the Senate.
Republicans supported the bill and argued that women needed more time to make such an important decision. Democrats objected and said it placed more restrictions on abortion rights.
The legislation would require Missouri officials to develop a video about the procedure to include in a packet of information given to women seeking abortions.