Jurors in ex-Gov. Rod Blagojevich's corruption trial got a purported look Thursday at a short list of candidates President Obama favored to replace him in the U.S. Senate. Federal prosecutors played a tape that revealed the first official message from the budding Obama administration about who the president supported for the Senate seat. In the call, Blagojevich's chief of staff, John Harris, tells his boss that Rahm Emanuel, Obama's soon-to-be top aide, had called him to give him a list of four people that Obama would find acceptable as his successor in the Senate. They were Congressman Jesse Jackson Jr.;...