Recent decades have seen growing concern regarding problems of electoral integrity. The most overt malpractices used by rulers include imprisoning dissidents, harassing adversaries, coercing voters, vote-rigging counts, and even blatant disregard for the popular vote. Elsewhere minor irregularities are common, exemplified by inaccurate voter registers, maladministration of polling facilities, lack of security in absentee ballots, pro-government media...