The noun pole refers to a long staff (for example, "fiberglass pole" or "totem pole") or to either extremity of an axis of a sphere ("North Pole"). The noun poll most often refers to the casting of votes in an election or a survey of public opinion. Likewise, the verb poll means to record votes or to ask questions in a survey.
(a) The window cleaner used a brush attached to a 30-foot-long aluminum _____.
(b) A public-opinion _____ is no substitute for thought. (Warren Buffett)