In Spain, the term "grand coalition" is typically used to refer to any hypothetical government formed between the centre-right to right-wing People's Party (PP) and the centre-left Spanish Socialist Workers' Party (PSOE). No such a coalition government as ever been formed at the national level, though it was proposed by then-Prime Minister Mariano Rajoy during the 2015–2016 government formation process. Rajoy's own investiture on 29 October 2016 was allowed through the abstention of PSOE's MPs in what was dubbed as a "covert grand coalition", in reference to PSOE's tolerance of Rajoy's minority government through punctual agreements until the re-election of Pedro Sánchez as party leader in June 2017.