(CNN) - Former President Bill Clinton will endorse and campaign with Chicago Democratic mayoral candidate Rahm Emanuel in January, according to Ben LaBolt, a spokesman for the campaign.
Emanuel served in the Clinton White House for five years before serving as an Illinois congressman and President Obama's chief of staff, a post he left earlier this year to run for mayor.
The Chicago Board of Elections ruled Thursday that he is in fact a Chicago resident, and therefore his name may remain on the ballot for the February 22 election. The question of residency arose because he moved to Washington, D.C. in 2009 to work at the White House, but the board said Emanuel never abandoned his Chicago home, which he established long before his move.
Clinton's windy city appearance would be his first campaign stop since the November midterm elections.