Outgunned in the national redistricting war, Democrats are launching a multi-pronged legal battle to try and prevent GOP gains ahead of next year’s midterms. It stands to be a grueling, lengthy and costly process for Democrats to counter President Donald Trump’s effort to draw new congressional maps that boost Republicans as they look to grow their slim majority next year. But with limited options to redraw maps in blue states outside Gov. Gavin Newsom’s effort in California, the courtroom...