The Washington Examiner weighs in on the breadth and depth of the Republican victory on Tuesday:
Republicans took control of at least 19 additional state legislative bodies Tuesday for a total of 26 in which the party controls both chambers, compared with 21 for Democrats and with three still up for grabs. ... These developments have national implications, especially for redistricting. According to the Republican State Leadership Committee, Republicans now will play a role in redrawing the boundaries of a whopping 314 congressional districts.
Lots more detail here.