.....The new study was released this week by economists Ricardo Hausmann of Harvard and Roberto Rigobon of MIT. They zeroed in on a key problem with the August 18 vote audit that was run by the government's electoral council (CNE): In choosing which polling stations would be audited, the CNE refused to use the random number generator recommended by the Carter Center. Instead, the CNE insisted on its own program, run on its own computer. Mr. Carter's team acquiesced, and Messrs. Hausmann and Rigobon conclude that, in controlling this software, the government had the means to cheat. "This result opens...