As many governments turn to new methods of voting, doubts have grown about their reliability and freedom from manipulation. Here is a selection of links on the topic.
Scottish Elections Review. Electoral Commission report on the administration of both the Scottish parliamentary and local government elections held on 3 May 2007
United States
Accurate, a Center for Correct, Usable, Reliable, Auditable, and Transparent Elections. See also Aviel D. Rubin's page