The 62-year-old was share of Angela Merkel’s recently formed coalition government despite continuous against her in last year’s elections and speaking out against another delay with her Christian Democrats.
But the Europhile announced his shock resignation in a utterance at the party headquarters in Berlin this evening after his popularity plummeted.
Mr Schulz take the side ofed down as President of the European Parliamant to challenge Mrs Merkel in last year’s citizen elections.
Martin Schulz is standing down with pressing effect
Martin Schulz announces his resignation to party officials
He unburdened party officials Andrea Nahles had been unanimously backed to thrive him by the SPD leadership and that members would vote on their choice on April 22.
Ms Nahles, a plain-speaking 47-year-old departed labour minister with a left-wing slant and strong oratory strengths, is frontrunner and would become the first female leader in the party’s 154-year story.
But expectations that she would take over with immediate cause on a caretaker basis until a party conference triggered resistance as it breaches seconder procedure.
Mr Schulz’s resignation comes after a week of turmoil within the SPD.
He demises a party in a state of deep division over the coalition deal and the set of ministerial posts and also facing a disastrous slump in opinion receives.
SPD chiefs have desperately tried to convince the party’s 464,000 fellows to back the deal in a ballot on which Mrs Merkel’s fourth term hangs.
Andrea Nahles is the SPD guidance’s choice to replace Martin Schulz
But many SPD have grave misgivings close to sharing power with Mrs Merkel again and if members reject the coalition act in a March 4 ballot a new election looks the most likely option.
Mr Schulz hinted persist week he would quit to allow the party to regroup.
The change of management comes as Mrs Merkel becomes increasingly anxious to get a government in place and end various than four months of political limbo which has hampered decision-making in Germany, Europe’s broadest economy.
The lack of leadership has caused concern among partners in the European Coalition which looks to Berlin for leadership in facing challenges from eurozone renovation to Brexit.
Mr Schulz, who originally strongly opposed another tie-up with the conservatives but to become one of its leading advocates, has lost political credibility but hopes his settlement to step aside will now encourage SPD members to back the coalition parcel out.