evidence: Our analysis, which builds on research we conducted 30 days after Roe fell, focuses on the 15 states that were enforcing either total or six-week abortion bans as of October 2. While most of these bans include very limited circumstances when an abortion may be allowed, those exceptions are designed to be difficult to navigate and are often unusable in practice. [...] - Altogether, these 15 states are home to almost 22 million women of reproductive age (aged 15–49), in addition to other people who may not identify as women but are capable of becoming pregnant and may need an abortion. That means almost one-third (29%) of the total US population of women of reproductive age are living in states where abortion is either unavailable or severely restricted. [...] An already precarious abortion access landscape is likely to continue to deteriorate. Our state legislative tracking predicts that a total of 26 states are certain or likely to ban abortion within a year of Roe being overturned. Already, several states—including Indiana, Ohio and South Carolina—had total or six-week abortion bans go into effect briefly before they were temporarily blocked in court. These bans could go into effect again as soon as the court cases are resolved. These disruptions to service provision—even when temporary—affect the ability of established providers to quickly resume abortion care. Further, rapidly changing laws may make it unclear to some patients whether they can legally seek an abortion in their state.