[Qtx]

They do weighting on nearly all polls which changes the results of the poll anyway. The way the weighting is done tend to make results vary quite a bit depending on how it's done. So a single result could get presented to everyone with numerous different values.

Organisations will often pay for polls to be done by many pollsters in secrecy and then use the data from the one that makes them look best and only mention that poll. With there being such a variation between some pollsters, no doubt could get results that suit you best.