To slew or cheat an online poll by repeatedly voting (clearing cookies, using proxies) or to make a blog appear to be commented by numerous posters by the same means. (From the practices of the Free Republic or "freepers")
The results of the CNN question of the day were running 70:30 in favor until an hour ago when it got freeped.
stackingpoll results by directing people to a web poll; with the goal of intentionally biasing the results to support their particular point of view
"Attention all believers in the sanctity of baby peas. There is a poll on a babypeasaredelicious.com. Go there and vote that every baby pea is sacred and should be saved, even those that are frozen and will never be planted in the ground"