As former Congressman Jesse Jackson Jr. stages a comeback that will upend the open race for the 2nd Congressional District, his competitors are prepared to pounce on his past.

Jackson Jr., 60, plans to announce his run for the open seat this week, according to his spokesman. Jackson Jr. in July formed an exploratory committee, angling for a return to the seat he held for 17 years. He has since been touring the district, registering voters and raising money, including at a Congressional Black Caucus fundraiser on Sept. 26 in Washington D.C.

Voters in the district that now stretches south and west will have to weigh whether they want to continue a political family dynasty — and give another chance to a man who comes with some historical baggage. Jackson Jr. left Congress in 2012, amid a ba

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