ABC News has confirmed that Rahm Emanuel will resign as White House chief of staff on Friday to begin his campaign for Chicago mayor.
There has been speculation about Emanuel running for mayor ever since Chicago Mayor Richard Daley said he was not going to seek re-election.
Emanuel said in an April television interview that it was "no secret" he'd like to run for mayor. The Associated Press Contributed to this report.
Do you want the Eyewitness News team to call you? Get a FREE Morning Wake-up Call and personalized weather report at abc7.com/wakeup