Los Angeles Times

William Daley, 62, Midwest chairman, JP Morgan Chase, and sits on boards of other major companies such as Abbott Laboratories, Boeing and Merck

Ties to Daley: The youngest of Daley's seven siblings, he has long been a Democratic operative in city, state and national politics. He was commerce secretary in the Clinton administration, key supporter of the Obama candidacy, chairman of Al Gore's campaign, and served on the Obama-Biden transition team. He considered a run for governor in 2010. He also helped lead his brother's 2009 effort to land the 2016 Olympics, a failure that had some predicting the mayor's political demise. Abel Uribe, Chicago Tribune