This is fascinating - the sequence of digits in provincial vote tallies may be a signal of vote tampering in Iran.
Why would fraudulent numbers look any different? The reason is that humans are bad at making up numbers. Cognitive psychologists have found that study participants in lab experiments asked to write sequences of random digits will tend to select some digits more frequently than others...There's more - click thru to the Washington Post for details. I'm loving this analysis by political scientists (yay!) Bernd Beber and Alexandra Scacco.
The numbers look suspicious. We find too many 7s and not enough 5s in the last digit. We expect each digit (0, 1, 2, and so on) to appear at the end of 10 percent of the vote counts. But in Iran's provincial results, the digit 7 appears 17 percent of the time, and only 4 percent of the results end in the number 5. Two such departures from the average -- a spike of 17 percent or more in one digit and a drop to 4 percent or less in another -- are extremely unlikely. Fewer than four in a hundred non-fraudulent elections would produce such numbers.
(And note he was chosen only because I dislike him so much, not because either of us like Rudy)