“…Some of these studies date back several decades and their methodologies differ so their findings are difficult to compare. This paper deploys the methodology now commonly in use in more recent studies of fulfilling campaign promises in a comparative perspective under the auspices of the Comparative Party Pledge Group (CPPG) (Artés, 2013; Artés and Bustos, 2008; Costello and Thomson, 2008; Håkansson and Naurin, 2016; Kostadinova, 2013; Mansergh and Thomson, 2007; Moury and Fernandés, 2016; Naurin, 2014; Pétry and Duval, 2015; Praprotnick, 2017; Thomson et al, 2017; Toros, 2015). Our findings can therefore be compared with their findings without loss of validity.…”