Elections are barred under Ukraine’s martial law but its next expiration is before the March 2024 presidential vote
Peacetime elections in Ukraine cost around 135 million euros and Zelensky wants Western election observers on the frontlines
https://www.rte.ie/news/ukraine/2023/0827/1401976-ukraine-elections/
Other sources: https://www.reuters.com/world/europe/zelenskiy-says-elections-could-happen-under-fire-if-west-helps-2023-08-27/
As the chief of staff, the president will likely be selected as military personnel, namely by desperately scouring towns and cities for volunteers