Compulsory voting
, 22 countries were recorded as having compulsory voting. Of these, only 10 countries (additionally one Swiss canton and one Indian state) enforce it. Of the 30 member states of the Organisation for Economic Co-operation and Development, 10 had forms of compulsory voting.
Postal voting
A form of postal voting was introduced in Western Australia in 1877, followed by an improved method in South Australia in 1890. On the other hand, concerns about postal voting have been raised as to whether it complies with the requirements of a secret ballot, in that people cast their vote outside the security of a polling station, and whether voters can cast their vote privately free from another person's coercion. There have been cases of electoral fraud with postal votes in the United Kingdom (including in Birmingham at the 2004 European and local government elections in the UK).