This Poll was May 10-13
Note that this poll took place before the second debate with the Rudy vs. Ron exchange on 9/11, though their results were released on May 16.
At least I give them credit for outlining their survey methodology.
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Survey Methods
Results are based on telephone interviews with 1,003 national adults, aged 18 and older, conducted May 10-13, 2007. For results based on the total sample of national adults, one can say with 95% confidence that 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.
For results based on the sample of 429 Republicans or Republican leaners, the maximum margin of sampling error is ±5 percentage points.
For results based on the sample of 489 Democrats or Democratic leaners, the maximum margin of sampling error is ±5 percentage points.