Centre in Reinfeldt I, Green in Löfven). In the governments Fälldin I and II, however, the Deputy Prime Ministership belonged to the Liberal Party despite the fact that it was the smallest of the three members. The reason for this might be ascribed to an unwillingness on behalf of the Centre and Liberals to give this position to the Moderates, due to ideological differences. In all of these governments, however, the Deputy Prime Minister also had a regular Cabinet portfolio. In July 2015, the office of the Deputy Prime Minister was the subject of some political debate. Following a brief illness of the social democratic Prime Minister, Stefan Löfven, the Prime Minister's office revealed that the Deputy Prime Minister Åsa Romson of the Green Party, although named Vice statsminister ("Vice Prime Minister") when the cabinet took office in October 2014, was in fact not expected to temporarily assume the duties of the Prime Minister as Statsministerns ställföreträdare ("Deputy of the Prime Minister") as stated in the Instrument of Government, instead yielding to the most senior minister of the cabinet. Effectively this made the social democratic then-Foreign Minister Margot Wallström the actual deputy of the Prime Minister, due to seniority rather than appointment. It also rendered the title of Vice statsminister an honorary title, for the most senior member of the party functioning as junior partner in the governing coalition, rather than an actual function. Role in one-party governments The situation is different in the one-party governments that have existed since the position of Deputy Prime Minister was introduced in 1976, namely the Liberal Ullsten government and the Social Democratic governments Palme II, Carlsson I-III and Persson. While Mona Sahlin might well have been described as something of a "successor-in-waiting" (even if she ultimately did not succeed Ingvar Carlsson to the Premiership), the other Deputy Prime Ministers have tended to be older and experienced politicians who have often been in charge of coordinating the work of the Government and may also have been in charge of some policy areas of their own which were not substantial enough to warrant a full-time Cabinet position, such as Bo Ringholm, who was Minister of Sport concurrently with being Deputy Prime Minister. Legal status According to 10 § Chapter 6 of the Instrument of Government, the Prime Minister may appoint a deputy who assumes the duties of the Prime Minister in case the latter is