I can't resist, since the rodent brought it up {g}
Polls don't "really bite," as they can be entertaining. Or they can spark serious discussion or grand whimsy.
All that (merely) bites, to me, are two ways of looking at polls:
~ Taking a small number of votes in a small user group as being revealing of any larger "truth." Even statistically. This is a self-selected, slowly growing universe of voters. It doesn't involve a sample, in any sense.
~ Overexplaining the results. Polls mean little, beyond a few moments of pleasant diversion. We're not waiting with bated breath for the outcomes. And we do know how to calculate ratios ... if this is needed at all, that is, for a group this small.
Oh, there's {/SpanishInquisition ON} a third thing that bites for me, after all {/SpanishInquisition OFF}:
~ Being grandiose about them, more so than they're worth. For example, by multiplying proper nouns beyond necessity. (And you know how those are designated.)
I name no names, but ... poll-makers here (and, I stress, that's plural, not singular, and it includes me) know whether these comments fit. Take them as you will. Further deponent sayeth not.