Here are what some of the IOC members said after the vote:
"I don't know that it says anything to them (the United States and the USOC)," Pound said. "When you look at the margin, it was clear there was an effort to make sure Rio got this, and the only meaningful threat to Rio would have been Chicago. So all the friends of Rio were urged to try and make sure Chicago didn't get into that position.
"I think there were a lot of people saying, 'If we don't get it, we'll support you but we've got to stop Chicago.' And that's sport politics, not anything else. It's election management. The Europeans and the Asians are much better at this (in the IOC) than we are. They are better at managing elections and thinking strategically. We kind of think if you've got the best bid, the world will recognize that, and these decisions are made solely on the merits of the bid. Well, not solely."