Legislators' behaviour and electoral rules: Evidence from an Italian reform

We explore how electoral rules and the degree of civicness of the voters interact in shaping elected officials' behaviour. We examine the expenditure proposals sponsored by Italian Senators from 1994 to 2013 and exploit the 2005 electoral reform that transformed a mainly majoritarian system into a mainly proportional one. First, we find that legislators elected in first-past-the-post districts are more likely to sponsor pork-barrel bills and to put effort into legislative activity than those elected with a closed-list proportional system. Second, more importantly, we show that the effects of the electoral rules are muted in areas with high civicness.