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Gallup Daily: No Dent in Obama Lead So Far

Gallup Daily: No Dent in Obama Lead So Far

Obama holds 7-point lead in latest results

PRINCETON, NJ -- Barack Obama continues to hold a lead over John McCain, 49% to 42%, in the latest Gallup Poll Daily tracking update.

The results are based on interviewing conducted Sept. 1-3. The vast majority of interviews on Wednesday evening were conducted before Sarah Palin gave her much-anticipated convention speech. However, the data do indicate that the initial first two nights of the convention -- the slimmed down Monday program in deference to Hurricane Gustav and Tuesday's speeches headlined by former senator Fred Thompson -- have, so far, done little to change voter preferences.

Thursday's interviewing will be the first to reflect the immediate impact of Palin's speech, and the coming days will give a truer measure of the effect the GOP convention -- including McCain's acceptance speech tonight -- is having on voters. Obama got a four percentage point increase in his share of the vote in Gallup Poll Daily tracking coming out of the Democratic convention last week, establishing a lead over McCain after the two had been exactly tied immediately prior to last week's convention. (To view the complete trend since March 7, 2008, click here.) -- Jeff Jones

(Click here to see how the race currently breaks down by demographic subgroup.)

Survey Methods

For the Gallup Poll Daily tracking survey, Gallup is interviewing no fewer than 1,000 U.S. adults nationwide each day during 2008.

The general-election results are based on combined data from Sept. 1-3, 2008. For results based on this sample of 2,771 registered voters, the maximum margin of sampling error is ±2 percentage points.

Interviews are conducted with respondents on land-line telephones (for respondents with a land-line telephone) and cellular phones (for respondents who are cell-phone only).

In addition to sampling error, question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of public opinion polls.

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