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.
Automatic Ballot Referral
An Automatic Ballot Referral (or Compulsory referral) is a ballot measure set up by the constitution of a state (or country) to at a certain time have a ballot appear statewide under certain situations.