I think keeping polls where they are is reasonable enough. For the time being, the forums here are somewhat low traffic; thus the polls reflect the votes of those who are drawn to whatever topic they are posted under, which makes sense. Actually some way to see what polls I've voted in my profile would be nice, but as this seems to be a pre-set forum layout (Nathan Lowell has the identical layout for his forums board, which made me do a double take when I checked it out), I dont think that's possible.
As an aside, thanks to this thread, I found an entertaining feature I wasn't previously aware of.. if you click the profile tag, then click "show the general statistics" at the bottom you get some interesting stats.