IN Chile we have CADEM plaza public (public square), a private organization, funded partyally by goverment, that publishes every week, the public perception on current events, political candidates, goverment aproval ratings, and so on.
It`s metods and results are fully public and auditable. and most people believe them.
al solng as polls methods and results are both transperent and based on solid statistical science, they are very good.
Im sure rich people in the USA have access to umbiased polls, it`s just too usefull.