Gallup Daily: Obama, McCain Contest Remains Tight

Obama has polled better in recent nights

PRINCETON, NJ -- Gallup Poll Daily tracking finds 46% of registered voters saying they would vote for Democrat Barack Obama for president if the election were held today, while 45% would choose Republican John McCain.

The race between the two has been very close since Gallup began tracking it in mid-March, with the vast majority of Gallup Poll Daily tracking reports showing a statistical dead heat. (To view the complete trend since March 7, 2008, click here.) In fact, over the past 10 days the race either has been exactly tied or has shown one of the candidates with only a one percentage point advantage. That may soon change, as Obama has run slightly better versus McCain in each of the past two individual nights' polling, following Hillary Clinton's decision to drop out of the presidential race and endorse Obama.

Since Obama clinched the Democratic nomination, there has been much talk of a joint Obama-Clinton ticket. While some of her supporters have pushed for this, Clinton has sought to ease the pressure on Obama by saying the decision is his alone, though she has said she would accept the vice presidential slot if offered. Gallup finds a slim majority of Democrats, 52%, in favor of Obama choosing Clinton as his running mate. -- 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 2-6, 2008. For results based on this sample of 4,408 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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