 After the presentation , the session was opened for questions . Nuzman clarified doubts by Arne <unk> about doping legislation ; Osório and Cabral answered two questions by Prince Albert of Monaco about accommodation and the project 's legacy , respectively ; and the President of Brazil himself responded to a question by Austin Sealy about organization risks . Following the presentations by the four Candidate cities , <unk> El Moutawakel presented the report of the Evaluation Commission to the Session . From a total of 106 eligible IOC members , 95 were available to vote in the first round . Members from the four bidding countries were not allowed to vote until their city was eliminated . Alpha Ibrahim <unk> , <unk> <unk> Lee , <unk> <unk> and the IOC president were eligible members who did not vote . Chicago fell in the first round with 18 votes , while Tokyo received 22 , Rio 26 , and Madrid 28 . In the second round , Tokyo was eliminated with 20 votes , while Madrid received 29 and Rio 46 . Rio de Janeiro was elected in the final round with 66 votes over 32 for Madrid . The winning city was revealed by Jacques <unk> at 6 : 30 ( <unk> ) during an announcement ceremony hosted by <unk> <unk> <unk> and Jonathan Edwards . Nearly 100 @,@ 000 people celebrated the victory on Copacabana beach while watching the live broadcast . Following the announcement , Richard <unk> , <unk> , Nuzman and Paes signed the Host City Contract and <unk> Rio de Janeiro as the host of the 2016 Olympic and Paralympic Games . 
