Ilse Aigner leads trader pricing in the next German president market due to sustained momentum from the CSU's explicit nomination push and cross-party signals favoring a female candidate ahead of the January 30, 2027 Federal Convention vote. CSU leader Markus Söder has repeatedly endorsed the Bavarian state parliament president, citing the party's 75-year absence from the office, while SPD figures including parliamentary group chair Matthias Miersch have voiced support for her unifying profile and democratic credentials. CDU hesitation over internal alternatives such as Bundestag President Julia Klöckner, Education Minister Karin Prien, or Annegret Kramp-Karrenbauer has kept their odds lower, as the governing coalition's combined seats provide the decisive majority. Traders price the field of other names, including Boris Rhein and Udo Di Fabio, to reflect the still-open CDU decision process and limited recent movement.