While multiple voting is not encouraged, technically adept users may be able to do so.

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Some lined up for more than an hour at schools and other voting centers, showing off fingers marked with ink to prevent multiple voting after they had finished.

NPR: Voting Begins In Tight Malaysian National Election

We're hearing reports that women were told that they would be in serious trouble if the indelible ink that's used to ensure against multiple voting was seen on their fingers.

NPR: Afghanistan Officials Call Election a Success

When the Supreme Court ruled, at the last minute, that the old thumb-print identity cards were as valid as the new photograph-carrying cards, many feared it would open the way to multiple voting.

ECONOMIST: Ghana

Incumbent President Hamid Karzai, dressed in his traditional purple and green striped robe, cast his vote shortly after the polls opened and had his finger stained with ink that is supposed to last for two weeks, a measure intended to thwart fraud by preventing people from voting multiple times.

CNN: Officials hail Afghan vote a success despite deaths

Obviously, in a state like Ohio, I'll take, the President has been there making the case for the importance of early voting, making the case for why people should go to the polls on multiple occasions over the past couple of weeks and speaking directly to them in their backyards.

WHITEHOUSE: The White House