“…Notably, the EP has constantly sought to increase its relevance in the EU’s political system through the creation of informal rules, including on the investiture of the Commission (Héritier et al, 2019: 61–79). These have, over time, altered the investiture as the EP deployed strategies such as acting as a first mover on matters like the spitzenkandidaten (Héritier et al, 2019: 14–15). The collective EP preference on changes to the appointment procedure was first vocalised in a 2012 EP resolution (European Parliament, 2012) that confronted the strict ‘letter’ of the treaty, that is the Council’s legal prerogative, with its reading of the treaty ‘spirit’, that is that the EP elections would bind the Council’s hand.…”