This paper considers empirically whether preference-based (empirical) power indices differ significantly from their preference-free (theoretical) counterparts. Drawing on the to date most comprehensive sample of EU Council votes (1993-2011), we use item-response models to estimate the EU27...

We assess the effect of constituents' preferences on legislators' decisions within a quasiexperimental setting: In the Swiss referendum process, citizens and legislators reveal their preferences for legislative proposals. We match roll call votes of all Swiss legislators on 102 legislative...

We assess the effect of constituents’ preferences on legislators’ decisions within a quasiexperimental setting: In the Swiss referendum process, citizens and legislators reveal their preferences for legislative proposals. We match roll call votes of all Swiss legislators on 102...