Earlier this month, Republicans in Tennessee enacted a new U.S. House map that carves up Cohen's majority-black district.
Cohen is challenging the state’s redistricting effort in court and said that he would reenter the race if that lawsuit succeeded in restoring his old congressional district.
Tennessee was the first state to pass new congressional districts after a U.S. Supreme Court ruling that basically said it was wrong to draw district lines that favor one particular race. Republicans in Louisiana, Alabama, South Carolina and Florida also have taken steps toward redistricting.
