I think someone needs to do a script to make the n900 win, even if they do filter, they should still count each ip address as an individual vote so its not like it would count against it.
Although I'd like the N900 to win this poll, it's too easy to vote again by disconnecting from 3G/GPRS, clearing browsing history, cache & cookies in MicroB, then reloading the poll page.
The results will just reflect how bothered/childish each user group is prepared to be to keep hammering away at the poll in reasonable numbers...