Appointed commissions and courts controlled the drawing of 219 out of 435 US House districts in the last redistricting cycle. Elected Republican officials controlled less than one third with Democrat elected officials the rest. The fact that these appointed officials and courts generally favored Democrats in this cycle was the main reason for the eight seat gain Democrats had in 2012.
Where exactly did you get these figures? In reality, the redistricting of 218 districts was held by the Republicans, 46 by the Democrats and the other 164 by independent commissions and courts. And the actual reason the Democrats gained eight seats was because they did much better in the 2012 election, actually winning the popular vote instead of losing by 7% as in 2010. In fact, Republican Gerrymandering cost the Democrats at
least six seats.
