>How else do you prevent fraud? I was surprised it wasn't already a requirement - really. I guess they could always require a photo id or that you mark your finger by dipping in semi-permanent ink (to prevent you from walking across town and voting again). That would send 50% of American voters home.
You must have seen the ink stuff somewhere in Latin America, I guess. This practice is actually quite widespread over here, and often used in different kinds of elections. The ink can't be washed away, but disappears after a few days.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)