Conducting opinion polls in the run up to an important election becomes
a high exposure business.Any
research agency providing figures needs to be sure they are statistically
robust.Monitoring the sway of
public opinion may involve monitoring the opinion of the same group of
people over a period of time.MARSC
allows the researcher to choose for a poll those who have already taken part
previously in specific research
projects.
Selecting those who took part in a previous opinion poll.
