Or to put it numerically, the Republican wave of 2010 did little more than undo the two-stage Democratic wave of 2006 to 2008, in which the Democrats gained 54 House seats combined (precisely the size of the anti-Democratic wave of 1994). In 2010 the Democrats gave it all back, plus about an extra ten seats or so for good - chastening - measure.
Yet Michael Barone says the Republicans gained some more enduring strength by advancing in many of the states.
Republicans look to have a bigger advantage in this redistricting cycle they've ever had before. It appears that in the states that will have more than five districts (you can make only limited partisan difference in smaller states) Republicans will control redistricting in 13 states with a total of 165 House districts and Democrats will have control in only four states with a total of 40 districts. You can add Minnesota (seven or eight districts) to the first list if the final count gives Republicans the governorship and New York (27 or 28 districts) to the second list if the final count gives Democrats the state Senate.