What state you're in has nothing to do with anything since wins are reported on FEDERAL income taxes. Usually a sponsor doesn't report wins, and send you a 1099, on wins under $600. But since all wins are technically supposed to be reported they can send a 1099 for any amount won.
P.S. If you received the X-Box and Kinect during the year 2011 they still have till Jan. 31st, 2012 to send you a form 1099 to file. They have the same deadline as an employer has to send you your tax forms. When in doubt just wait till after Jan. 31, 2012 to file your income taxes.