Poll: Obama leads among likely voters

PRINCETON, N.J., Oct. 31 (UPI) -- Democratic U.S. presidential nominee Barack Obama has an eight-point lead over Republican John McCain among traditional likely voters, a poll indicates.

The Gallup Poll Daily tracking from Tuesday through Thursday shows that Obama leads McCain 51 percent to 43 percent.

In its analysis, Gallup noted that McCain's support among traditional likely voters has slid four points, from 47 percent to 43 percent. Meanwhile, Obama's support has risen from 49 percent to 51 percent.

Gallup said the number of undecided voters nationally has increased from 4 percent to 6 percent.

Obama has an 11-point lead over McCain among all registered voters, 52 percent to 41 percent, Gallup said.

The general-election results are based on a sample of 2,825 registered voters. The maximum margin of sampling error is plus or minus 2 percentage points.

The "traditional" likely voter sample, which takes into account current voting intention and past voting behavior, consisted of 2,116 voters. The maximum margin of sampling error is plus or minus 3 percentage points.

Gallup interviewed 2,459 voters for the "expanded" survey, with a maximum margin of sampling error of plus or minus 2 percentage points.