People who do polls don't go out and ask everyone in the country their opinion. They ask a percentage of the population and extrapolate from that. 6000 people is enough to get an idea of how a much larger group of people would vote. So your "only 6k out of a group of 2m" quip isn't really valid, sorry. Edit for response to "more types of weapons in crucible" comment: Not really more types, everyone just started using pulses instead of autos. All they did was switch the usage rates of autos and pulses.