Gary Merrill on July 28, 1950. That same day, he married Bette Davis, his co-star from "All About Eve", and adopted her daughter Barbara from a previous marriage. He and Davis adopted two more children, Margo and Michael, but they had a bitter divorce in 1960. Often politically active, he campaigned in 1958 to elect the Democrat, Edmund Sixtus Muskie, as governor of Maine. Merrill also took part in the Selma to Montgomery marches in 1965 to promote Black voter registration. In response to U.S. President Lyndon B. Johnson's Vietnam War policy, he unsuccessfully sought nomination to the Maine legislature as an
All About Eve for the aging diva role, before giving it to Bette Davis. Davis, who had recently ended an 18-year association with Warner Bros. after several poorly received films, immediately accepted the role after realizing it was one of the best she had ever read. Channing had originally been conceived as genteel and knowingly humorous, but with the casting of Davis, Mankiewicz revised the character to be more abrasive. Mankiewicz praised Davis both for her professionalism and for the caliber of her performance. Anne Baxter had spent a decade in supporting roles and had won the 1946 Academy Award for Best Supporting