A poll is a quick survey or election. Typically, a poll does not take long to answer and consists of given choices from which users can elect.
The term poll usually refers to a more casual survey, compared to, for example, an election. Polls are often employed as widgets on websites to get quick input from users of the website on current questions or hot topics.
Polling also refers to the gathering of opinions or prefered choices by interviewing (face to face or remote via telephone, mail or email) in order to get a statistically reliable prediction of an outcome, like elections.