Legend:
  First past the post (FPTP)
  Two-round system (TRS)
  Instant-runoff voting, including contingent voting (IRV)
  Election by legislature
  Election by electoral college
  Election by legislature (first rounds) and electoral college (or bodies which are not wholly legislatures; subsequent rounds)
  unused: Confirmation by referendum after election by party
  Not elected (mostly monarchies)
  In transition
  Unused
  No information
File:BlankMap-World-Microstates.svg
VARIOUS