After voting had concluded the results were in and the socialist PS party have secured a narrow majority in the new parliament, gaining 117 seats, one more than required to form a majority government.
“This is a special night for me,” Costa told jubilant supporters. “The Portuguese have confirmed that they want a Socialist Party government for the next four years … they want stability, certainty and security.”
Of other note in these election results is the rise of the right wing Chega party, jumping from just one seat for founder Andre Venture to 12 in this parliament, now becoming the third most popular political party in this year's election.
More updates and analysis to follow Monday morning....