Clinton's lead over Sanders shrinks as her edge over GOP vanishes

[Ford_Prefect]

13. If you read each question and the listed respondents for each the numbers get much smaller.

1012 did not respond to all of the questions or even to the majority of questions.
http://i2.cdn.turner.com/cnn/2015/images/09/10/demsclinton.pdf

for example:

BASED ON 259 REGISTERED VOTERS WHO DESCRIBE THEMSELVES AS DEMOCRATS AND 136 REGISTERED VOTERS WHO DESCRIBED THEMSELVES AS INDEPENDENTS WHO LEAN DEMOCRATIC, FOR A TOTAL OF 395 REGISTERED DEMOCRATS-- (SAMPLING ERROR: +/- 5% PTS.)

4. How enthusiastic would you say you are about voting for president in next year’s election--
extremely enthusiastic, very enthusiastic, somewhat enthusiastic, not too enthusiastic, or not at all enthusiastic?

Please note that I do not dispute the results of the poll. I question whether so small a selection is actually representative, and yes I have taken statistics and have done polling. I think CNN is frequently a bit remiss in these matters and often shows a particular preference for their version of status quo and pop culture myths. They rarely ask the truly hard questions and often seem to go out of their way to uphold a variety of cultural stereotypes.