The Virginia Supreme Court on Friday struck down the state’s recently passed redistricting referendum, dealing a massive blow to Democrats who hoped to gain several seats from new House maps. The redistricting ballot measure passed by three percentage points in late April in what was seen at the time as a major win for Democrats, who stood to gain as many as four seats from redrawn maps ahead of the November midterms. The Virginia Supreme Court decision comes amid an ongoing partisan gerrymandering war and as Republican-led states across the South are working to redraw their House districts after a...