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 Central America. 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: Mario Rana
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Willi Kaltschmitt Lujan Guatemala
Born: Age: 65 - member since 1988
Former Olympic boxing official. Board member of World Anti-Doping Agency.
Meliton Sanchez Rivas Panama
Age: 70 - member since 1998
Accountant by trade. Vice-president of the International Softball Federation (ISF).
Mario Vazquez Rana Mexico
Age: 73 - member since 1991
Media mogul and president of the Association of National Olympic Committees and Pan-American Sports Organisations.
Olegario Vazquez Rana Mexico
Age: 69 - member since 1995
Brother of Mario (above). Member of Mexico's Olympic shooting team from 1964-76. President of International Shooting Sport Federation (ISSF).