“…Recent pledge research (Kostadinova, 2013;Toros, 2015;Praprotnik, 2015;Thomson et al, 2014;Naurin, 2013;Dobos and Gyulai, 2015) mostly takes inspiration from a small selection of classic pieces in pledge research (Royed, 1996;Artés, 2013;Artés and Bustos, 2008;Naurin, 2011;Moury, 2011;Mansergh and Thomson, 2007;Costello and Thomson, 2008; and the APSA papers by a group of first generational pledge scholars: Thomson et al, 2010;2014) and the theoretical literature these classic pieces make reference to. The two main theoretical sources of these classic studies are the literature on responsible party government (following, inter alia, APSA, 1950 andKlingemann, Hofferbert andBudge, 1994; for an overview see: Körösényi and Sebők, 2013) and the theory of parties and coalitions as adapted to European context (such as Laver and Shepsle, 1996;Strøm et al, 2008).…”