PRINCETON, NJ -- Barack Obama leads John McCain 46% to 42% in the latest Gallup Poll Daily tracking update on registered voters' general election preferences.
The latest release, based on June 13-15 interviewing with over 2,600 registered voters nationwide, shows Obama regaining a statistically significant lead over McCain. Over the weekend, the race was slightly closer, but Obama still held an advantage. Obama has led by as many as seven percentage points since Hillary Clinton decided to abandon her presidential bid earlier this month.
McCain has led by as many as six percentage points since Gallup began tracking general election preferences in March. (To view the complete trend since March 7, 2008, click here.)
In Sunday's release, a high of 15% of registered voters did not express a preference for either McCain or Obama, instead saying they were undecided, preferred neither one, preferred some other candidate, or refused to disclose their preference. The percentage with no opinion is down slightly to 13% in today's release, though this is still higher than it has been for most of the tracking to date. -- Jeff Jones
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 June 13-15, 2008. For results based on this sample of 2,607 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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