Missouri abortion-rights advocates are launching a campaign to legalize abortion through a state constitutional amendment, challenging the recent near-total ban. The proposed ballot measure would establish a "right to make and carry out" reproductive health decisions, including abortion, with restrictions after fetal viability. Advocates face opposition from state Republicans and a tight timeline to gather signatures. Despite internal disagreements, the coalition is presenting a unified front, aiming for success in either the summer primary or the November general election. Anti-abortion groups are also mobilizing against the potential ballot measure. Similar initiatives are being pursued in other states, with varying levels of success and legal challenges.