What these people don't realise is that others can see who's voted in the public polls. "So what?" you say...well...here's another little thing that these people don't realise - only the most recent names are displayed. In other words, those necroing the older polls to be smartarses have exposed themselves very easily.
So, go on, have a look at some of the current polls, you'll see a few consistent names in all of them.
Now I'm not accusing anyone of anything untoward, but one of them has posted in this thread.

Although I have my suspicions on who the real PITA is...
Anyway, with the guy now out of the way and this "secret" exposed, hopefully others "who know better" will think twice and the older polls will die again...either that or those that didn't see them first time around will innocently keep them bubbling for a few days.