RD - I think that's the premiere fault of a lot of polls. The poll creator uses his/her own bias to create the options. That's why it's so easy to manipulate data...
Results of your poll might show, for example, Taco Bell to be the "favorite" of a majority of people who respond, but it might in actuality be most people's second choice behind Sonic Burgers, again just as an example.
That's why most polls have a "other" or "none of the above" option.
I think that's what StevenHW was referring to...
My favorite isn't there. As I'm sure you may have guessed by my example, my favorite is Sonic.