The number of abstentions and undecided voters is increasing in most democracies world-wide, posing the hazardous task for pollsters to take these phenomena into account researchers' tactics for dealing with these issues vary from country to country.
Statistics show that political participation in Switzerland, as in many other Western countries, is constantly decreasing. A first analysis has shown, that certain segments of the population are much less participating in polls than others, especially women, young people and the lower social class. Our own research has let us to distinguish between "good", "occasional" and "bad" voters.