Polling Aggregation

Opinion polls are an increasingly central part of election campaigns. My work focuses on the aggregation of opinion polls in Ireland and the Netherlands.


The Dutch public broadcaster NOS publishes my aggregation of Dutch national opinion polls, called ‘Peilingwijzer’ (Polling Indicator).

Irish Polling Indicator

My Irish Polling Indicator is published regularly on politicalreform.ie.

Tom Louwerse
Associate Professor

Associate Professor in Political Science at Leiden University