By Hiroko Tashiro

The Final Four-Chicago, Madrid, Rio, and Tokyo

The International Olympic Committee meets on Oct. 2 in Copenhagen to decide on the host city for the summer games in 2016. The finalists are Chicago, Madrid, Rio de Janeiro, and Tokyo. There will be plenty of high-powered lobbying even at the last minute: Both First Lady Michelle Obama and TV star Oprah Winfrey will in Denmark to promote their hometown, and Spain's King Juan Carlos and Brazil's President Luiz Inácio Lula da Silva will be there, too. (Japan's new Prime Minister, Yukio Hatoyama, hasn't said yet whether he's going.) When it comes to financing the games, the Japanese have the edge, but the other cities get better grades for enthusiasm of locals. Here's a look at the finalists and what they have planned should they win.