Spain faces political uncertainty after two new movements won nearly a third of the seats in the country’s election.
Anti-austerity party Podemos and liberal Ciudadanos made big gains as the conservative Popular Party (PP) lost its majority.
“Spain is not going to be the same anymore and we are very happy,” said Podemos leader Pablo Iglesias.
The PP and the Socialists had alternated running the government for more than three decades.
The parties must now embark on negotiations to form a coalition.
The PP had 28.7% of the vote, the Socialists 22%, Podemos 20.6% and Ciudadanos 13.9%.
Greek Prime Minister Alexis Tsipras described the Spanish election results, as a defeat for austerity.
“Austerity has also been defeated politically in Spain,” he said in a brief written statement.
“The forces that support society have made a dynami entrance on the political scene,” added the Greek leader, who has backed left-wing Podemos, which came third in terms of the number of seats won.
“The prospect of a progressive majority is now possible. Our struggle is being vindicated. Europe is changing,” concluded the SYRIZA leader.