 Rio de Janeiro was primarily evaluated during the Applicant phase , accurately on March 14 , 2008 , when the IOC Working Group released its report after four days of meetings , giving a weighted @-@ average score of 6 @.@ 4 to the bid . It was based on a thorough technical analysis of the projects presented on the Application File , which was developed by the Rio de Janeiro bid committee after having access to the Olympic Games Knowledge Management database as well as the official IOC Technical <unk> . The Working Group composed of several experts assessed the city 's potential for staging successful Olympic Games according to eleven criteria presented in the Application File . Rio de Janeiro 's highest score came from Government support , legal issues and public opinion due to the strong government commitment , and its lowest from Safety and security due to the city 's chronic problems of violence . Experience in major events also yielded good scores , while a shortage in the number of required hotel rooms undermined the accommodation theme . The Working Group also gave an 8 @.@ 3 score to Tokyo , 8 @.@ 1 to Madrid , 7 @.@ 0 to Chicago , 6 @.@ 9 to Doha , 5 @.@ 3 to Prague and 4 @.@ 3 to Baku ; being the basis for the selection to the Candidature phase . On September 18 , 2008 , after the shortlist which concluded the Application phase , the IOC announced the composition of its Evaluation Commission . The commission inspected the four Candidate cities under the leadership of <unk> El Moutawakel , who also chaired the Evaluation Commission for the bid process of the 2012 Summer Olympics and Paralympics . 
