The Olympic dreams of London, Paris, Madrid, New York and Moscow rest in the hands of the 116-strong International Olympic Committee on Wednesday.
So who makes up this diverse bunch of royals, politicians, sports administrators and former Olympians?
Find out with our rundown on the members from the Caribbean. Check out another region by clicking on the map above.
Three of the 116 will not vote at all, while another 14 cannot vote in the first round, for a variety of reasons.
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Key player: Reynaldo Lopez
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Richard Carrion Puerto Rico
Age: 52 - member since 1990
Runs a bank. Led Puerto Rico capital San Juan's failed bid for the 2004 Games.
Reynaldo Gonzalez Lopez Cuba
Age: 56 - member since 1995
Head of Cuba's Olympic committee. Former vice-president of International Baseball Association.
Roque Napoleon Munoz Pena Dominican Republic
Age: 77 - member since 1983
Former head of Dominican Republic Olympic Committee and national chess player.
Austin Sealy Barbados
Age: 65 - member since 1994
Former banker and Barbados ambassador to the UK and Israel.