California's congressional Democrats ran a secret effort this year to manipulate the work of the independent citizens panel that drew the state's new political districts, foiling the intent of reformers who sought to remove the redistricting process from the control of party bosses.

Democrats met behind closed doors at the party's Washington, D.C., headquarters, hired consultants, drew their ideal districts and presented maps to the panel through proxies who never disclosed their party ties or "public interest" groups created specifically for the purpose. In many cases, the panel responded by doing just what the Democrats wanted.

more....

http://www.santacruzsentinel.com/localnews/ci_19594086

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I was at two of the redistricting meetings, spoke there and also wrote emailed suggestions, It seemed pretty clear to me that most of the Commissioners were Dem lackeys, regardless of stated "party affiliations."  The obviously gerrymandered results support that.