Kai Wegner, the Governing Mayor of Berlin, announced on Friday that he will not stand as the CDU's lead candidate in the city's state election on 20 September, ending weeks of mounting pressure over his conduct during a major power outage earlier this year. Speaking at a hastily convened press conference, the 53-year-old said he could no longer get his message across. "I can't get through anymore because everything else is overshadowing it," Wegner said. "When I can no longer make myself heard, I have to draw consequences."

The crisis traces back to 3 January, when tens of thousands of Berliners were left without electricity for up to five days after arsonists attacked a bridge housing power cables in the city's southwest — an attack later claimed by the far-left extremist group Vulkangruppe. Berlin, which is simultaneously Germany's capital and one of its 16 federal states, holds a unique status that places particular pressure on its governing mayor during emergencies. Wegner drew criticism almost immediately for failing to visit affected districts and for giving conflicting accounts of his own actions that day. He had initially claimed to have been coordinating the response from home and his office, but it later emerged that he had spent an hour playing tennis with his partner in the afternoon — to "clear his head", as he subsequently admitted.

The scandal deepened in the days before his announcement when it was revealed that Wegner had also falsely claimed to have spoken by phone with Chancellor Friedrich Merz during the crisis. Newspaper Der Tagesspiegel reported that no such call had taken place. The accumulation of misleading statements prompted a backlash within his own party, including an open letter — co-authored by CDU member and entrepreneur Christian Miele, great-grandson of the founder of the Miele appliance company — that described Wegner's behaviour as a threat to public trust in democracy and declared that an election campaign led by him was unwinnable.

Wegner said he will remain in office as Governing Mayor until a new city senate is formed after the election, but ruled out serving as a senator in any future government. He also indicated he intends to step down as Berlin's CDU regional chair at the earliest appropriate moment. Finance Senator Stefan Evers is widely reported as the frontrunner to replace him as lead candidate. The CDU's position has weakened significantly in recent polls, with one survey placing the party fourth on 17 percent, behind the Left Party, the Greens, and the far-right AfD.

The stakes for Berlin's CDU are considerable. Wegner himself framed the September vote as a choice between the political centre and what he called a "left-wing alliance" taking over city hall. Whether Evers — who as finance senator has overseen significant budget cuts that have angered cultural institutions and trade unions — can consolidate the party ahead of the election remains an open question.