The increase in number and significance of public opinion polls has ma
de them a social institution with an established role in the functioni
ng of other social institutions. When the media commission and publish
opinion polls they accomplish in a new way, the task of public repres
entation which formerly has belonged primarily to political parties an
d interest and pressure groups. Also the relationship between parties
and interest groups with their membership is increasingly mediated thr
ough polls. Market forces follow the public opinion and react to the c
hanges in it. The article presents a two-dimensional typology of opini
on polls and examines the role of different types of polling in the Fi
nnish political system. That role was considerably strengthened in the
early 1990s for two reasons. The president of the republic was electe
d for the first time with a direct, two-stage election. In the same ye
ar the referendum on the country's EU membership was carried out. Gett
ing ready for these two elections created an unheard of increase in pu
blic opinion polls. The media adopted an active political role by comm
issioning and publishing polls. The article concludes with a discussio
n on the relationships between democracy, polling and public opinion.