How to run a clean election

M"Mexico has developed an elaborate system of safeguards to prevent voter fraud. Absentee ballots, which are cast outside the view of election officials and represent the easiest way to commit fraud, are much harder to apply for than in the U.S. Voters must present a valid voter ID card with a photo and imbedded security codes. After they cast a ballot voters--just like those famously pictured in Iraq last year--also have a finger or thumb dipped in indelible purple ink to prevent them from voting again."