CNN 'Poll' Showing Double-Digit Post-Speech Bump for Obama Sampled Double the Amount of Dems

CNN: The CNN/Opinion Research Corporation poll was conducted just before and just after the president’s speech, with 427 adult Americans questioned by telephone. The survey’s sampling error is plus or minus 5 percentage points.



The sample of speech-watchers in this poll was 45 percent Democratic and 18 percent Republican. Our best estimate of the number of Democrats in the voting age population as a whole indicates that the sample is about 8-10 points more Democratic than the population as a whole.