The only things I want to know about pre-election polls are: -
1) Does anyone pay any attention to these, other than the press pundits?
(and contributors to this thread, obviously!)
2) Do any of those who do pay attention, finding their favoured party to be, reportedly, in a comfortable lead in the polls, base their decision to not bother going to the polling station on election day?
3) Do any of those who do pay attention, finding their favoured party to be, reportedly, trailing in the polls, put aside decades of election day apathy and shift their posterior down to the polling station in an attempt to 'save the day'?
w.r.t. 2 & 3, I realize that residents in a 'safe seat' - for either side - usually know about it and know that reacting to unfavourable poll results in such a way would be futile.
Arguably all elections boil down to just the marginals, so it is intriguing to speculate about the extent to which polls interfere with election results. (Aspects of crowd behaviour interest me more than the politics itself).