Our Georgian Service might offer some insight based on experience. That country installed closed-circuit cameras at voting booths in 2005 and again during the early 2008 presidential election. The problem there appeared to stem from the fact that, despite pledges to the contrary, the resulting footage was not necessarily made available to just anyone -- ombudsman (and former RFE/RL freelancer) Sozar Subari included.
Back in Azerbaijan, voters can be excused their skepticism. One such skeptic is a teacher who told our Azerbaijani Service about a recent evening when police arrived at his home to count the number of eligible voters in his household. Before leaving, an officer growled, "We'll just see who you vote for!"
-- Ruzanna Zeynalova with Andy Heil