from SLATE today: The 2018 election was a body blow to partisan gerrymandering. Four states enacted redistricting reform that will diminish the role of politics in drawing district lines; more elected Democratic governors who can veto partisan maps. Another state, North Carolina, replaced a Republican state Supreme Court justice with a liberal who fought gerrymandering as a civil rights attorney. No matter what happens in 2020, it is all but guaranteed that the next decade’s