The single transferable vote (STV) is a multi-winner electoral system in which each voter casts a single vote in the form of a ranked-choice ballot. Voters have the option to rank candidates, and their vote may be transferred according to alternate preferences if their preferred candidate is eliminated or elected with surplus votes, so that their vote is used to elect someone they prefer over others in the running. STV aims to approach proportional representation based on votes cast in the district where it is used, so that each vote is worth about the same as another.

Liquid democracy is a form of delegative democracy, whereby an electorate engages in collective decision-making through direct participation and dynamic representation. This democratic system utilizes elements of both direct and representative democracy. Voters in a liquid democracy have the right to vote directly on all policy issues à la direct democracy; voters also have the option to delegate their votes to someone who will vote on their behalf à la representative democracy. Any individual may be delegated votes and these proxies may in turn delegate their vote as well as any votes they have been delegated by others resulting in "metadelegation".