PRINCETON, NJ -- Gallup Poll Daily tracking from May 21-23 finds 52% of national Democratic voters favoring Barack Obama to be the party's presidential nominee, compared with 44% choosing Hillary Clinton.
Obama's current eight percentage point advantage among national Democrats marks the eighth straight day he has led Clinton in Gallup Poll Daily tracking. More broadly, Obama has held a significant lead in all but one Gallup Poll Daily tracking report since May 12. (To view the complete trend since Jan. 3, 2008, click here.)
At the same time that Obama is enjoying the popular support of his party for the nomination, he lags a bit behind Clinton in separate trial heats for the general election against John McCain. According to Gallup Poll Daily tracking from May 19-23, Obama is essentially tied with McCain among national registered voters: 45% for Obama vs. 46% for McCain. Clinton runs four points ahead of McCain, 49% to 45%. -- Lydia Saad
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 Democratic nomination results are based on combined data from May 21-23, 2008. For results based on this sample of 1,231 Democratic and Democratic-leaning voters, the maximum margin of sampling error is ±3 percentage points.
The general election results are based on combined data from May 19-23, 2008. For results based on this sample of 4,460 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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