This research note presents new definitions, measurements and data of cabinet conflicts and conflict features. Particular attention is given to the ethno-territorial nature of conflicts. This approach can easily be applied to various sources, periods, policy levels and countries. As an example, this note describes a novel dataset that provides the most fine-grained picture of Belgian cabinet conflicts to date (N = 1,090; 1995-2018).

Peer assessment is a rather marginalised method in political research. This research note argues that the collective expertise of MPs can complement other data to contribute to more comprehensive evaluations of MPs’ parliamentary work. Yet, this method is potentially flawed by low survey participation and rater bias among MPs. The experience with a peer assessment survey among members of three Belgian parliaments shows that participation does not necessarily need to be problematic. However, the empirical analysis suggests that scholars should control for various forms of rater bias.

Belgium is probably the world’s best known case of where caretaker governments reside. Yet a clear scholarly definition and measurement of this concept is missing. Based on a detailed analysis of the Belgian federal cabinets, this research note explores the main characteristics and measures the length of the various caretaker periods. We find that Belgium was governed for no less than 1,485 days by a caretaker government between 2007 and 2020, which equals more than four full calendar years. This research note also presents a novel typology of caretaker periods based on the institutional and political practice within the Belgian legislative and executive branches. This typology can be used to assess caretaker periods at other levels of government as well as in other countries in order to improve our understanding of the many ‘faces’ that a caretaker government can take on.

Sub-constituency campaigning occurs when parties focus their campaign resources on specific geographical areas within an electoral district. This behaviour was traditionally thought to occur only in single-member plurality elections, but recent research demonstrates that proportional systems with multi-member districts can also elicit sub-constituency campaigning. However, most studies of sub-constituency campaigning rely on self-reported measures of campaigning, not direct measures of campaign intensity in different regions and communities. We present novel data on geographical variations in the intensity of Flemish parties’ campaign advertising during the 2014 general elections in Belgium, which provides a direct measure of sub-constituency campaigning. Our findings show clear evidence of sub-constituency campaigning: parties campaign more intensely in municipalities where they have stronger electoral support and in municipalities with greater population density.