[Mariner]

"The CNN/Opinion Research Corporation poll was conducted July 16-21, with 1,018 adult Americans questioned by telephone, including a special sample of 308 black and 303 Hispanic respondents. The survey's overall sampling error is plus or minus three percentage points."

What crap.

60% of the sample makes up <20% of the voting public...and this isn't even REGISTERED voters.

[9YearLurker]

I believe they only used the oversampling of blacks and hispanics to make their subcategory results statistically valid—but did not include them all in their regular survey totals.