Rockefeller resigned his position with the AIDC and conducted his first campaign for governor in 1964 against Faubus. His campaign was ultimately unsuccessful, but Rockefeller energized and reformed the tiny Republican Party to set the stage for the future. In 1964, Osro Cobb, a Republican former state chairman who had also served as United States Attorney for the Eastern District of Arkansas, refused to endorse Rockefeller but openly endorsed Faubus, who subsequently gave Cobb a temporary appointment to the Arkansas Supreme Court.