Huge, huge numbers.
Everyone knows by now that 2010 and 2014 were very good to the Republican party. What they don't understand (or understand well enough) is just how good. Yes, Republicans now control the Senate and have their largest majority in the House since World War II. But it's downballot (way downballot) where the depth of the Republican victories over the last three elections truly reveal themselves -- and where the impact will be felt over the long term.
In the last three elections, Republicans have gained 913 state legislative seats across the country, according to calculations made by Larry Sabato at the University of Virginia.
Here is an incredible chart showing the massive losses since the 2010 midterms, all this on Obama's watch. Not just the state legislative seats, but congressional seats and governships. GOP needs to put this chart in some web ads. A whopping 69 seats lost in the house since 2010.