None of this really matters. You can't settle scientific questions with surveys. There are two separate questions that have been conflated, and the media, public and politicians are hopelessly confused.
One question is: Is the Hansen hypothesis correct? Hansen's hypothesis was that rising CO2 would cause a dangerous amount of exponentially rising global warming. CO2 is too weak in its greenhouse gas properties and present at too low a concentration to directly cause such a catastrophe; thus Hansen realized his hypothesis must assume a positive feedback mechanism, whereby a little warming could lead to more warming, and magnify the effect of relatively small increases in the mole fraction of CO2.
Based on what we know now, thirty years after Hansen formulated his hypothesis, the hypothesis is wrong. The Earth's climate system responds to warming with negative feedback; not the positive feedback required by Hansen's Hypothesis. Early, Hypothesis based models assumed positive feedback. These models all predicted exponentially rising temperature with rising CO2. But many observations have not been in accord with the models predictions. Also, it has been discovered that short term cyclical swings in CO2 and temperature are linked and closely mirror one another. However temperature change leads the CO2 change. This is evidence that short term, regular swings in CO2 content are driven by similar swings in temperature, and not the other way around as predicted by Hansen's Hypothesis. If positive Feedback is present, it is insufficient to overcome countervailing negative feedback, so net feedback is negative. Another error incorporated into early, temperature predicting Hansen models, and in particular the IPCC models, is that they assumed a very long half life for anthropomorphic CO2 emitted to the atmosphere. It is now known that the half life is short, on the order of a few years. Still another defect in the early models is their failure to properly account for convection cooling which is now known to be a very important cooling mechanism and a component of negative feedback.
The second question is not whether climate changes over time. The paleorecord and other data tells us it does. The important question is whether we are in a period of statistically unusual climate change, or even if we are not, what is the current direction of change and how much change might we reasonably expect? The Earth's climate is a large, chaotic system. Consequently, these are extremely difficult questions to answer, except after the fact and very long periods of observation spanning many years.
So if you bothered to read this far, you might still be wondering what the point of all this is. Well it is this: There is hardly any thinking person that is a climate change denier. And many are convinced that we are in a warming period. (That's less certain if one considers the entire Earth, than if one only considers certain regions of the Earth.)
There are, however, many climate scientists, which include meteorologists and atmospheric physicists, that are Hansen Hypothesis deniers. Their view is that while our Earth may indeed be warming, the evidence is overwhelming that the warming has nothing to do with CO2.