Crombez is a specialist in European Union politics and business-government relations in Europe. His research focuses on EU institutions and their impact on policies, EU institutional reform, lobbying in the EU, and electoral laws and their consequences for voter representation, party politics, and government formation. He is a professor of political economy at the University of Leuven in Belgium. Having taught in Leuven’s business and economics department since 1994, his teaching responsibilities also include political business strategy and applied game theory. He has also been a visiting professor at the Forum on Contemporary Europe at the Freeman-Spogli Institute for International Studies at Stanford University since 1999. He obtained a BA in applied economics from the University of Leuven in 1989 and a PhD in business and political economics from Stanford in 1994.