Of the many disappointments Democrats suffered in this election, the most bitter could be the failure to flip control of the Senate. But we’ll have to wait until January’s two Georgia runoffs to see if that in fact happens. The most long-lasting flub, however, is already certain: Poor Democratic performance in state legislative contests has left Republicans with another decennial redistricting advantage, which will give the GOP undeserved gains in congressional and state legislative contests throughout the 2020s.