Gallup Daily: Obama 48%, McCain 42%

Obama holds significant lead for third consecutive day

PRINCETON, NJ -- Barack Obama continues to hold a lead over John McCain in Gallup Poll Daily tracking -- 48% to 42% in June 8-10 polling of registered voters nationwide.

This marks the third consecutive day that Obama has held a significant lead, as he enjoys a modest boost in support following Hillary Clinton's decision to concede the nomination. Obama's six and seven percentage point advantages over McCain in recent days have been his best to date. Obama has held significant leads over McCain at other points since mid-March (when Gallup first began tracking general election preferences), but for the most part the two candidates have been locked in statistical dead heats. (To view the complete trend since March 7, 2008, click here.). -- 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 8-10, 2008. For results based on this sample of 2,679 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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