[head explodes]
Statistically, that's surely pointless, because subjective responses most likely have no relationship to actual voting decisions.
Although I suppose they may tell you something about people's conscious beliefs about their own media savvy.
(Is that a useful thing? I'm not sure that it is.)
I thought it was telling that the reponses were so clear-cut: the polls feed into a media game that fools everybody... but me.
I quoted it in my argument above because it tends to back up what I'm saying about respondents being more and more reluctant and cagy - or downright making up responses. The primary (or sincere, or naïve) nature of responses can no longer be counted on at all.
See this in Le Monde.