By what scenario do you determine a 269-269 tie?
I'm using 270toWin.com, and if they have their electoral votes right, if the swing states go as follows:
Romney: FL, NC, VA, CO, NH, IA, ME-CD2
Obama: NV, MI, PA, WI, OH
then Obama wins, 270 to 268.
Iowa, Colorado, and Nevada makes it 269-269.