Abortion rights groups in Missouri and South Dakota are gathering signatures for ballot measures to establish a constitutional right to abortion, aiming to reverse near-total abortion bans in their states. This effort is part of a broader trend in multiple states where similar measures are being pursued. While Missouri appears to offer a greater chance of success due to public opinion, both states face challenges, including legislative obstacles and opposition efforts. The proposed amendments in both states seek to establish the right to make decisions about reproductive health care, including abortion, with certain restrictions. In South Dakota, the amendment faces additional hurdles, including a law allowing signers to withdraw their support and concerns about potential legislative regulation of abortion.