Rep. Jesse Jackson Jr. (D-Ill.) has won his primary over former Rep. Debbie Halvorson (D-Ill.) by a huge margin.

With 71 percent of precincts in, Jackson led Halvorson by 71 percent to 29. CBS Chicago reported that Halvorson conceded shortly before 10 p.m.

Jackson's new district expanded significantly because of population loss on Chicago's South Side, and now stretches more than an hour's drive south of the city to exurban Kankakee, territory Halvorson once represented.

The results show two recent controversies didn't hurt him badly with voters. Jackson is facing ongoing House Ethics Committee investigation into whether he tried to bribe indicted former Illinois Gov. Rod Blagojevich (D) into appointing him to the Senate, and has admitted to an extramarital affair he had with a campaign backer.

But the district is still heavily liberal and African-American and comprises all of his base, and Halvorson is a white centrist Democrat. Jackson also secured the endorsement of the Chicago Tribune's conservative-leaning editorial board, a surprise, since it has long been critical of him.