The 2004 execution of Cameron Todd Willingham in Texas remains one of the most controversial death penalty cases in modern U.S. history, with forensic evidence that indicates an innocent man was put to death. Now, activists in Austin would like to make Mr. Willingham Texas Gov. Rick Perry’s running mate. With Mr. Perry surging to front-runner status in the Republican primary race, a slew of activities are planned to raise the profile of the Willingham case, and the aftermath that directly involved Mr. Perry. Anti-death penalty activists that run Cameron Todd Willingham website are recruiting activists in Iowa and New...