She decided not to suggest any person as her successor as leader of the CDU. However, political observers had long considered Annegret Kramp-Karrenbauer as Merkel's protégé groomed for succession. This view was confirmed when Kramp-Karrenbauer – widely seen as the chancellor's favourite for the post – was voted to succeed Merkel as leader of the CDU in December 2018. Kramp-Karrenbauer's elevation to Defence Minister after Ursula von der Leyen's departure to become president of the European Commission also boosted her standing as Merkel's most likely candidate for succession. In 2019, media outlets speculated that Kramp-Karrenbauer may take over Merkel's position as Chancellor sooner than planned if the current governing coalition proved unsustainable. The possibility was neither confirmed nor denied by the party. In February 2020, Kramp-Karrenbauer announced that she would resign as party leader of the CDU in the summer, after party members in Thuringia defied her by voting with Alternative for Germany to support an FDP candidate for minister-president. Kramp-Karrenbauer was succeeded by Armin Laschet at the 2021 CDU leadership election.