On Election Day 2016, Crystal Mason went to vote. When her name didn't appear on official voting rolls at her polling place in Tarrant County, Texas, she filled out a provisional ballot. Ms. Mason's ballot was never officially counted or tallied because she was ineligible to vote: She was on supervised release after serving five years for tax fraud. Nonetheless, that ballot has wrangled her into a lengthy appeals process after a state district court sentenced her to five years in prison for illegal voting, as she was a felon on probation when she cast her ballot. Ms. Mason maintains that she didn't know she was ineligible to vote. Her case is now headed for the Texas Court of Criminal Appeals, the highest state court for criminal cases. Ms. Mason unsuccessfully asked for a new trial and lost her case in an appellate court. This new appeal is the last chance for Ms. Mason, 46, who is out on appeal bond, to avoid prison. If her case has to advance to the federal court system, Ms. Mason would have to appeal from a cell. According to Tommy Buser-Clancy, a lawyer at the American Civil Liberties Union of Texas, Ms. Mason should never have never been convicted. If there is ambiguity in someone's eligibility, the provisional ballot system is there to account for it, he said. If her eligibility was incorrect, he said, "that should be the end of the story." 72 percent of [Texas attorney general, Ken] Paxton's voter fraud cases have targeted people of color.