Iñigo Errejón contested the 24 May regional election in Madrid as head of the Más Madrid list (also postulating himself as prospective candidate to become the President of the Community of Madrid).
The Más Madrid list obtained a 14.69% of the valid votes, earning 20 seats of the 11th term of the Assembly of Madrid, while the list led by Podemos (Unidas Podemos Izquierda Unida Madrid en Pie), obtained a hair over the 5% electoral threshold; the whole left-of-centre forces (including PSOE) fell again short of forming a left-wing majority in the regional parliament (with 64 out of 132 seats).

As negotiations between PSOE Unidas Podemos to form a coalition government presided by Pedro Sánchez after the April 2019 general election collapsed, a general election set for December 2019 was in the horizon.
An alternative list vying to run in the new election around Más Madrid in order to break the deadlock was postulated.
The initiative was approved by the party members during an informal assembly on 22 September 2019.
Three days later the platform was launched under the name Más País and Errejón was elected to lead it, vowing "to be at the service of a progressive government".
Más País later reached agreements to run in coalition with Compromís, Equo and Chunta Aragonesista in several constituencies.

The party coalition with Equo in Madrid obtained just two seats at the election, while the Compromís-dominated alliance  in Valencia earned another seat.
The Más País legislators, initially destined to join the Mixed Parliamentary Group, helped to create another miscellaneous group, the "Plural Parliamentary Group", merging with other legislators.
On 7 January 2020 Errejón, who congratulated Sánchez and Iglesias during the former's investiture session as prime minister, as both have reached a government coalition agreement, warned however that the action of the new government should not be directed against the opposition right-wing forces in the upcoming legislative term, as it would then buy the right-wing argument of Spain being split in two, rather than what Errejón thought it was actually the case (that "Spain is divided by inequality").
He then proceeded to voted 'yes' in the second round of the investiture.
Iñigo Errejón contested the 24 May regional election in Madrid as head of the Más Madrid list (also postulating himself as prospective candidate to become the President of the Community of Madrid). The Más Madrid list obtained a 14.69% of the valid votes, earning 20 seats of the 11th term of the Assembly of Madrid, while the list led by Podemos (Unidas Podemos Izquierda Unida Madrid en Pie), obtained a hair over the 5% electoral threshold; the whole left-of-centre forces (including PSOE) fell again short of forming a left-wing majority in the regional parliament (with 64 out of 132 seats).
As negotiations between PSOE Unidas Podemos to form a coalition government presided by Pedro Sánchez after the April 2019 general election collapsed, a general election set for December 2019 was in the horizon. An alternative list vying to run in the new election around Más Madrid in order to break the deadlock was postulated. The initiative was approved by the party members during an informal assembly on 22 September 2019. Three days later the platform was launched under the name Más País and Errejón was elected to lead it, vowing "to be at the service of a progressive government". Más País later reached agreements to run in coalition with Compromís, Equo and Chunta Aragonesista in several constituencies.
The party coalition with Equo in Madrid obtained just two seats at the election, while the Compromís-dominated alliance  in Valencia earned another seat. The Más País legislators, initially destined to join the Mixed Parliamentary Group, helped to create another miscellaneous group, the "Plural Parliamentary Group", merging with other legislators. On 7 January 2020 Errejón, who congratulated Sánchez and Iglesias during the former's investiture session as prime minister, as both have reached a government coalition agreement, warned however that the action of the new government should not be directed against the opposition right-wing forces in the upcoming legislative term, as it would then buy the right-wing argument of Spain being split in two, rather than what Errejón thought it was actually the case (that "Spain is divided by inequality"). He then proceeded to voted 'yes' in the second round of the investiture.
Íñigo Errejón