Pere Aragonès says vote validated his decision to pursue political negotiations with Pedro Sánchez

Catalonia’s president has hailed a “new stage” in the quest for regional self-determination after a vote by MPs backing the Spanish government’s deeply divisive amnesty law, and vowed to continue pushing for a mutually agreed referendum if he wins another term in May’s snap election.

Pere Aragonès, who has led the regional government for the past three years, told the Guardian that the amnesty – demanded by Catalan separatist parties in return for helping Spain’s Socialist-led coalition back into power after last year’s election – had validated his decision to pursue political negotiations with the prime minister, Pedro Sánchez.

Passing of bill will come as relief for PM Pedro Sánchez, who has gambled his political future on the concession

Spain’s congress has approved the controversial and divisive Catalan amnesty bill that regional separatists demanded in return for helping the country’s Socialist-led coalition government back into office after last year’s inconclusive general election.

The passing of the bill, which was approved by 178 votes to 172 in Spain’s 350-seat parliament, will come as a relief for the prime minister, Pedro Sánchez, who has gambled his political future on the concession.

About 170,000 people demonstrate in capital over socialist party leader’s deal enabling second term in office

At least 170,000 people gathered in central Madrid for another large protest against the controversial Catalan amnesty law that has allowed Spain’s socialist prime minister, Pedro Sánchez, to secure a second term in office.

Sánchez was sworn in on Friday after winning an investiture vote the previous day that came almost four months after July’s inconclusive snap general election. Although the conservative People’s party (PP) narrowly beat Sánchez’s Spanish Socialist Workers party (PSOE) in the election, it was unable to secure the parliamentary support to form a government even with the backing of the far-right Vox party and other smaller groupings.

Spanish leader’s deal with Catalan separatists has sparked huge protests and outrage from rightwing parties

Pedro Sánchez is preparing for a fraught and turbulent second term as Spain’s prime minister after his socialist party regained power by agreeing to a deeply controversial amnesty for Catalan separatists that has infuriated rightwing parties and led to huge protests across the country.

The investiture vote on Thursday came almost four months after an inconclusive snap election in July in which Sánchez’s governing Spanish Socialist Workers party (PSOE), was narrowly defeated by its conservative rivals in the People’s party (PP).

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“Today we live in a democracy worse than yesterday,” the conservative People’s party deputy secretary Miguel Tellado wrote following news of an agreement between the socialists and Junts.

Spain’s socialist party and Catalan separatist party Junts have confirmed that they have reached a deal for Junts to support a Socialist-led government, Reuters reported.