Double simultaneous vote (DSV) is a feature of some electoral systems in which multiple offices – such as the president and members of a legislature – are elected through a single vote cast for a party. It can be combined with other electoral systems; in Uruguay DSV is used to elect the president and members of the Senate and Chamber of Representatives, with the presidential election also using the two-round system; if no party/presidential candidate receives a majority of the vote, a second round is held for the presidential election.Uruguay Election Passport
The initial republican constitutions of several countries in the Commonwealth of Nations, such as Kenya,THE CONSTITUTION OF KENYA ACT 1969, Section 9 – "in every constituency in which a poll is required to be taken[...]the ballot paper shall be in such form as to pair each candidate for President who is nominated by a particular political party with the candidate (if any) for the National Assembly who is nominated by that political party, and so as to permit the voter to cast one vote for one of the pairs (which shall be taken to be a vote for each member of the pair who is a candidate in a contested election);" Guyana and Zambia,Zambia 1968 provided for presidential elections by double simultaneous vote. Occasionally, as in Tanganyika,An Act to Declare the Constitution of Tanganyika, Section 4The Republican Constitution of Tanganyika a variant was used whereby the candidate who won a plurality of constituencies (as opposed to a plurality of votes) would be elected. Such systems have also been used in Latin America.
Use CountryFirst electionSecond electionThird electionSimultaneous votesOfficesSystemOfficesSystemOfficesSystemAngolaMembers of the National AssemblyParty-list PRPresidentFPTPClosed list party vote + personal voteBoliviaPresident (first round)TRSChamber of DeputiesAMSSenateParty-list PRPersonal vote + mixed single vote + closed list party voteGuyanaMembers of the National AssemblyParty-list PRPresidentFPTPClosed list party vote + personal voteUruguayPresident (first round)TRSChamber of RepresentativesParty-list PRChamber of SenatorsParty-list PRPersonal vote + 2x closed list party voteZambiaPresident (first round)TRSNational AssemblyParty-list PR in a parallel voting systemhttps://www.parliament.gov.zm/sites/default/files/documents/acts/Electoral%20Process%20%28Amendment%29%20Act%2C%202026.pdfPersonal vote + closed list party vote
Notes
See also Straight-ticket voting
References