Another lawsuit challenging North Carolina’s latest round of redistricting has been filed. A conservation group, university mathematicians and voters involved in the suit accuse Republican mapmakers of illegal partisan and racial gerrymandering in both the state’s congressional and General Assembly districts. The litigation filed late Tuesday in state court is spearheaded by the North Carolina League of Conservation Voters. The plaintiffs in part accuse Republican legislators of violating the state constitution by parceling out portions of the state’s large urban counties to favor GOP congressional candidates. They also say General Assembly lines also appear to dilute the voting of Black residents. Republicans have defended the maps as lawful.