Obama’s margin over McCain slightly smaller than in previous days
PRINCETON, NJ -- Gallup Poll Daily tracking shows Barack Obama with 46% of the support of registered voters and John McCain at 44%. This is a slightly smaller margin for Obama than in previous days, but broadly representative of the pattern of the general election for most of this month.
These results are based on interviewing conducted on June 16-17 and June 19. (Gallup did not conduct Gallup Poll Daily tracking interviewing on June 18.) Obama has had a higher share of the vote than McCain during most of June, with a margin ranging from one to seven percentage points. Friday's two-point edge for Obama is consistent with that general pattern, although at the narrower end of the range. In the broadest sense, the race between McCain and Obama has been close for months now, with McCain holding small leads over Obama in earlier months this spring prior to Obama's gaining his slight edge in recent weeks. (To view the complete trend since March 7, 2008, click here.) -- Frank Newport
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 June 16-17 and June 19, 2008. For results based on this sample of 2,648 registered voters, the maximum margin of sampling error is ±2 percentage points.
Interviews are conducted with respondents on landline telephones (for respondents with a landline 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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