M. Spencer Green—AP
In this Wednesday, April 1, 2015 photo, Chicago Mayor Rahm Emanuel speaks at a African-American Women for Rahm luncheon in Chicago. Emanuel’s predecessor, Richard M. Daley, barely broke a sweat during most of his campaigns over more than 20 years in office. But Emanuel failed to win a majority in a five-candidate field in February, prompting the first mayoral runoff since Chicago switched to nonpartisan elections two decades ago. With a runoff election between Emanuel and challenger Jesus “Chuy” Garcia set for Tuesday, April 7, 2015, Chicago voters are being treated to something they haven’t seen in a long time: a mayor actually having to work to win re-election. (AP Photo/M. Spencer Green)