From Wikipedia:

"Presidential elections were scheduled to be held in Ukraine on 31 March 2024 according to the constitution, which mandates elections be held on the last Sunday of March of the fifth year of the incumbent president's term of office. However, in response to the Russian invasion of Ukraine, since 24 February 2022 the Ukrainian government has enacted martial law, and Ukrainian law does not allow elections to be held when martial law is in effect."

"The Ukrainian constitution stipulates that a president's term concludes only when a successor is sworn in, indicating that Volodymyr Zelensky could continue to serve as president even after the expiration of the original five-year term to which he was elected."

So... yes, Zelensky is a zombie.