Have to say it but by making the possibilities only yes/no the poll is not terribly useful. For example, though I said "no" that is really as incorrect as saying "yes". I do not NECESSARILY change settings just because I'm starting a new campaign. Often, even though I'm starting a new campaign I will use the same setting because plot arcs were unresolved, the players are enjoying it, or there is just more about the setting to explore that would go to waste by changing settings. But I sometimes take advantage of the opportunity if I'm tired of the old one, or more interested in taking the next campaign in a different direction.
Such a poll needs to be structured as: WHEN you start a new campaign HOW OFTEN do you start with a new setting? Always-frequently-sometimes-seldom-never?