Electoral system
An electoral system or voting system is a set of rules that determine how elections and referendums are run and how their results are decided. They are used in politics to elect national and local governments. Elections also happen in businesses, and other sorts of  organisations. These rules usually govern voting,  when elections happen, who can vote, who can be a candidate, how the votes are counted, how votes decide the election, limits on campaign spending, and other things that can affect the result.