Hans von Spakovsky has written Absentee Ballot Fraud: A Stolen Election in Greene County, Alabama, a legal report for the Heritage Foundation. The first time I heard Hans speak was at a Caltech-MIT Voting Technology Project event at Caltech in 2001. He talked about the potential for absentee ballot fraud. It always struck me he was on much more solid ground focusing on out-of-sight voter fraud than on polling place voter fraud.