Results of GAO's Testing of Voting Systems Used in Sarasota County in Florida's 13th Congressional District (PDF)
Fifteen months and three rounds of testing later, the U.S. Government Accountability Office has issued its final report on the high undervote rate in the 2006 election in Florida’s 13th Congressional District. After a thorough examination of the machines’ software, the investigators were unable to uncover evidence of tampering, hacking, or a glitch that could have caused the abnormal number of undervotes in that election.
Read the report here (PDF).