A franchise in which some voters have more than one vote, usually by property, education or occupation, while others have one.
In more detail
J. S. Mill proposed extra votes for the better educated in 1861 but rejected property as a basis. Belgium used plural votes from 1893 to 1919 (one to three votes by property, family and education). The UK abolished plural voting in parliamentary elections in 1948. It differs from restricted suffrage, which denies some people any vote.