CHICAGO (CBS) — Chicago Mayor Rahm Emanuel will take on Cook County Commissioner Jesus “Chuy” Garcia in a runoff election on April 7. With 92 percent of precincts reporting, Emanuel had 45 percent, shy of the 50 percent plus one vote needed to avoid a runoff. Garcia had 34 percent of the vote, separating him from the rest of Emanuel’s challengers and putting him in position for the runoff. Trailing Garcia is businessman Willie Wilson in third with 10 percent, Alderman Robert Fioretti in fourth with 7 percent and William “Dock” Walls was in last with 3 percent.