Rahm Emanuel at the Chicago Board of Elections (8 images)

Former White House chief of staff Rahm Emanuel gives a thumbs-up as he waits to testify as a witness at a hearing before the Chicago Board of Elections in Chicago on December 14, 2010. Emanuel's candidacy for mayor of Chicago is being challenged on the basis of a law that requires Chicago residency for one year prior to running for municipal office. UPI/Brian Kersey

Former White House chief of staff Rahm Emanuel waits to testify as a witness at a hearing before the Chicago Board of Elections in Chicago on December 14, 2010. Emanuel's candidacy for mayor of Chicago is being challenged on the basis of a law that requires Chicago residency for one year prior to running for municipal office. UPI/Brian Kersey

Former White House chief of staff Rahm Emanuel (C) waits to testify as a witness at a hearing before the Chicago Board of Elections in Chicago on December 14, 2010. Emanuel's candidacy for mayor of Chicago is being challenged on the basis of a law that requires Chicago residency for one year prior to running for municipal office. UPI/Brian Kersey

Former White House chief of staff Rahm Emanuel has his microphone checked as he prepares to testify as a witness at a hearing before the Chicago Board of Elections in Chicago on December 14, 2010. Emanuel's candidacy for mayor of Chicago is being challenged on the basis of a law that requires Chicago residency for one year prior to running for municipal office. UPI/Brian Kersey