Olaf Scholz Is Running as the Next Angela Merkel in Germany, and It Seems to Be

BERLIN — When Olaf Scholz asked his fellow Social Democrats to nominate him as their candidate for chancellor, some inside his own camp publicly wondered if the party should bother fielding a candidate at all.

Germany’s oldest party was not just trailing Chancellor Angela Merkel’s conservatives but had slipped into third place behind the Greens with a humiliating 14 percent in the polls. As recently as June, the German media was framing the contest to succeed Ms. Merkel as a two-way race between her conservatives and the ascendant Green Party.

But with the Sept. 26 national elections fast approaching, Mr. Scholz and his once-moribund party have unexpectedly become the favorites to lead the next government in Europe’s biggest democracy.

“It’s really touching to see how many citizens trust me to be the next chancellor,” a beaming Mr. Scholz told hundreds of supporters at a recent campaign event in Berlin, as he stood in front of a giant screen proclaiming: “Scholz will tackle it.”

Ten months after Joseph R. Biden Jr. won the U.S. presidency for the Democrats, there is a real chance that Germany will be led by a center-left chancellor for the first time in 16 years. Not since the second term of former President Bill Clinton have both the White House and the German chancellery been in the hands of center-left leaders.

“The atmosphere is just amazing right now — we’re almost in disbelief,” said Annika Klose, who is a Social Democrat candidate for Parliament and watched Mr. Scholz speak. “Since I joined the party in 2011, every election result was worse than the last.”

It’s not that Germans have suddenly shifted left. Mr. Scholz, who has served as Ms. Merkel’s finance minister and vice chancellor for the past four years, is in many ways more associated with the conservative-led coalition government than his own party. Two years ago, he lost the party’s leadership contest to a leftist duo, which attacked him for his moderate centrism.

But Mr. Scholz has managed to turn what has long been the main liability for his party — co-governing as junior partners of Ms. Merkel’s conservatives — into his main asset: In an election with no incumbent, he has styled himself as the incumbent — or as the closest thing there is to Ms. Merkel.

“Germans aren’t a very change-friendly people, and the departure of Angela Merkel is basically enough change for them,” said Christiane Hoffmann, a prominent political observer and journalist. “They’re most likely to trust the candidate who promises that the transition is as easy as possible.”

With 25 percent in recent polls, Mr. Scholz’s Social Democrats have overtaken the Greens, now lagging at 17 percent, and the conservatives at barely over 20 percent. But political analysts point out that this would hardly constitute a convincing victory.

“No one has ever become chancellor since 1949 with so little trust,” said Manfred Güllner, head of the Forsa polling institute, referring to the founding year of the Federal Republic of Germany after World War II.

“German voters are quite unsettled,” Mr. Güllner added. “After 16 years of a Merkel chancellorship that…