PRINCETON, NJ -- Hillary Clinton now has a three percentage point advantage over Barack Obama in Gallup Poll Daily election tracking from March 15-17, with the support of 47% of national Democratic voters, while Obama has the support of 44%.
This is the second day in a row in which Clinton has had a slight advantage over Obama -- albeit not a statistically significant lead. An analysis of the day to day trends shows that Clinton had a significant lead in Monday night interviewing. On Tuesday Obama made a highly-publicized speech in Philadelphia on issues relating to race and his controversial pastor, Rev. Jeremiah Wright, and Gallup Poll Daily tracking results in the days ahead will reflect its impact on Democratic voters' preferences, if any.
There has been no change in the relative positioning of the two Democratic candidates when pitted against John McCain in hypothetical trial heats for the fall election. McCain has a very slight 2-point advantage over Obama. McCain is tied with Clinton, as he has been the last four days. -- Frank Newport
Methodology: 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 March 13-17, 2008. For results based on this sample of 4,388 registered voters, the maximum margin of sampling error is ±2 percentage points.
The Democratic nomination results are based on combined data from March 15-17, 2008. For results based on this sample of 1,237 Democratic and Democratic-leaning voters, the maximum margin of sampling error is ±3 percentage points.
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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