Greg Palast got suspicious about the supposed crime wave of voter fraud, so he decided to look into it. In his six-month investigation, he found that more than half of U.S. states were using the program Crosscheck to flag and sometimes purge potentially fraudulent voters from their rolls. Tens of thousands of names have already been removed in at least one battleground state, and millions more are threatened. Follow the link below to watch the first part of this four-part series. Al Jazeera America has made some of these “double voter” lists public for the first time. Are you on your state’s? Plug in your name here.