Gerrymandering is surging in states where legislatures are in charge of redrawing voting districts used to elect members of Congress. A new map passed by North Carolina's Republican-led legislature could net several new seats for the GOP — providing a big boost in the party's quest to retake the U.S. House next year. But that could be canceled out in Illinois, where Democrats who control the legislature adopted a new map designed to elect as many Democrats as possible. Lawmakers in other states also have been using 2020 census data to draw districts beneficial to their own parties.