Yesterday American announced double elite qualifying miles through the end of January for all AAdvantage members (registration required).
Residents of California, Illinois, and Texas already had a double elite qualifying miles promotion through the end of March (registration required) that doubles status miles earned on their flights between Chicago/Dallas and Los Angeles/San Francisco.
American Airlines confirmed on MIlepoint that the two promotions are stackable.
For eligible members, a simple Chicago Los Angeles roundtrip taken by the end of January will earn 10,467 qualifying miles, a simple Dallas – San Francisco roundtrip would earn 8787 qualifying miles. That’s triple elite qualifying miles through January 31. That’s enough to make me think long and hard about crashing on someone’s couch in Chicago until the 31st of January in order to establish residency, though neither American nor my wife would likely appreciate it (and the State of Illinois might want to start taxing me!).