He's putting his weight behind an issue that's vital to election outcomes but doesn't often get a lot of attention.

A recently released three-minute political video starred a very familiar political face: Barack Obama. The video was created by the National Democratic Redistricting Committee (NDRC), a group run by former Attorney General Eric Holder, whose mission is to prevent partisan gerrymandering.

Gerrymandering, simply put, is the practice of a state government redrawing its congressional district maps to unfairly favor one party in elections. For example, Texas Republicans have been charged with doing just that, likely preventing minorities and Democrats from winning more elections.

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