Mitt Romney may have gotten one of the shortest post-debate bounces in history as swing state and national polls reveal Obama in the lead.

The big confusion today has been over the Gallup daily tracking poll. On Monday morning, the Gallup daily tracking poll had the race tied at 47%-47%, but by Monday afternoon, the poll was updated to show President Obama leading 50%-45%.

So, what gives?

It turns out that Gallup broke with their own tradition, and changed their methodology. Instead of using a 7 day rolling average, they compared two sets of three day averages. Monday afternoon’s update included Saturday and Sunday polling. When they returned to the 7 day average, and included polling after the new jobs numbers were released, President Obama returned to a 50%-45% lead.