The American Civil Liberties Union has filed suit against the state of Ohio, charging that Republican lawmakers unconstitutionally drew up the state’s redistricting map to keep their party in office. The ACLU said in a statement that Ohio’s oddly shaped and winding congressional districts are among the “most egregious examples of partisan gerrymandering in modern history.” The lawsuit comes on the heels of similar challenges to Republican-drawn maps in other states, including North Carolina, Texas and Pennsylvania.