This is a slam-dunk in a way. Fox is touting and Drudge is hyping a new poll showing a dramatic tightening in the presidential race. Here's their report today:

As the candidates make their closing arguments before the election, the race has tightened with Barack Obama now leading John McCain by 47 percent to 44 percent among likely voters, according to a FOX News poll released Thursday. Last week Obama led by 49-40 percent among likely voters.

Seems pretty convincing, right? I mean: they use the same pollster. But when you look at the internals, you find the following demographics. Last week's poll had a sample with the following mix:

Democrats 401, ±5 percentage points; Republicans 345, ±5; independents 148, ±8 Obama supporters 462, ±5; McCain supporters 370, ±5

This week's:

Democrat LV 379, ±5; Republican LV 364, ±5; independent LV 146, ±8, Obama supporters LV 439, ±5; McCain supporters LV 405, ±5

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