2016 By abarney May 16, 2007 Chicago bid was officially launched Jun 4, 2008 Chicago, Madrid, Rio de Janeiro and Tokyo were chosen for the shortlist Nov 4, 2008 Sen. Barack Obama elected president Some have speculated that the historic election of Chicago-based Obama may secure the city's chance to host the Olympics. Oct 2, 2009 Final selection is made in Copenhagen, Denmark Jul 27, 2012 London 2012 Summer Olympics begin Jul 22, 2016 Opening ceremonies if the games are held in Chicago
