Following the debate, Fox News pollster Luntz suggested there would be a “shift” in the national polls in the direction of McCain-Obama thanks to Palin's St. Louis performance.

That, he said, was based on the responses registered among Luntz's debate focus group members. How many focus group participants changed their votes and moved over to the GOP side after the debate? Three.

Meanwhile, actual debate polls raise doubts about a pending “shift.”

And here's what happened when CNN polled its focus group: