Supporters of Ohio Issue 1 cheer as results come in at a watch party hosted by Ohioans United for Reproductive Rights on November 7, 2023 in Columbus, Ohio.

Ohio voters have added the right to access abortion care to the state's constitution, NBC News projects — another major political victory for abortion-rights advocates in the nearly 17 months since the Supreme Court struck down Roe v. Wade.

The passage of the Issue 1 ballot measure inserts language in the state constitution guaranteeing every person in Ohio the right "to one's own reproductive medical treatment, including but not limited to abortion," and barring the state from "burdening, penalizing or prohibiting" those rights — though it specifies that abortion will remain prohibited after the point a doctor judges a fetus would most likely survive birth, with exceptions to protect the woman's life or health.