The thesis examines what affect countries climate policy through a quantitative analysis of data on xx countries in 2010. Much of the debate on climate policy focus on the economic side of climate policy. Still, there is little research on what affects countries climate policy. Furthermore is it little evidence to back up the argument that climate policy is to expensive. This research aims to refocus on what climate policy actually is, and how it is affected. This is done through a cross-national OLS-regression based on a new dataset constructed for this thesis.