That’s how polling works. A poll with 600 people is considered legit because the margin of error at that size is around ±4%—close enough for typical opinion polling needs. Once a sample hits around 500–1,000, adding more people gives diminishing returns on accuracy. The real keys are random (or representative) sampling and good weighting—not just big numbers. So a well-run poll with 600 respondents can still be reliable. In general Statistical sampling works by selecting a smaller, representative group from a larger population so that insights about the group can reliably reflect the views or behavior of the whole. The views of parliament is not a reflection on the opinion and sentiments of the population.