COPENHAGEN, Denmark (CNN) -- The International Olympic Committee on Friday eliminated Chicago and Tokyo as contenders to host the 2016 Games.

Still under consideration to host the two-week sporting spectacle are Rio de Janeiro, Brazil, and Madrid, Spain.

After the cities made their presentations to the IOC on Friday, the IOC members sat down to cast their votes in a secret ballot.

Ninety-seven of the IOC's 106 members are eligible to vote in the first round; seven must sit out that round because they represent one of the countries bidding for the Games.

A city must receive a majority of votes in order to win. If no city receives a majority, voting moves on to a second round, with the city receiving the lowest number of votes being eliminated, an IOC spokeswoman said.

Friday morning, President Obama in Copenhagen urged the IOC to pick his hometown of Chicago, saying the city represents the American dream as well as the Olympic spirit.

Obama's address to the 106 IOC members was the highlight of the Chicago bid committee's final presentation before the vote to choose the host city.