The chancellor, meanwhile, hailed the strong victory in North Rhine-Westphalia on Sunday and vowed to do “everything we can” to ensure that her party also prevails in general elections set for September 24.
Schulz’s SPD won just 31.2% of the votes, well below the 39.1% it garnered five years ago, final results showed.
Merkel’s Christian Democratic Union (CDU) gained significant ground in the state, for decades an SPD stronghold, coming in as the top party with 33%.
She said that her party would now gear up for the national campaign.
“We are aware that this new phase will be an exhausting one,” she said, but added that the grand right-left coalition led by her party has a good record to show.
Schulz, for his part, admitted that “we suffered a difficult moment last night”.
“One thing that is totally clear is that, before general elections on September 24, we’ll have a long way to go. It is a rocky road, but the SPD is a battle-hardened party and we will put up a fight in the elections,” he said.
With one-fifth of Germans – 13.1mn – eligible to vote in North Rhine-Westphalia, elections in the western state are closely watched for hints to the federal outlook.
It carried even higher stakes this year, being the last regional vote before the national election and having a direct impact on the SPD’s ability to close a nationwide gap of around 10 percentage points with the CDU.
The SPD had already suffered two setbacks since Schulz took over the party leadership, with the CDU scoring strong victories in the small states of Saarland and Schleswig-Holstein.
