Hamburg elects its Bürgerschaft for five years.

State parliament and Bürgerschaft mean the same institution here.

State parliament is the general term. Hamburg uses the name Bürgerschaft for it. Eligible voters elect its members. Among other duties, parliament passes state laws and the budget and scrutinises the government, called the Senate. Its distinctive name does not make it merely a neighbourhood body.

The term begins with the newly elected Bürgerschaft’s first sitting. Under the constitution, the next regular election takes place between the 57th and 60th month after that term begins. The outgoing term ends when the new parliament meets. Five years is therefore the regular duration asked for, not a promise of an unchanging calendar date.

The other three answers

The question asks for the regular duration under Hamburg law.

Early elections do not change the regular term.

Article 11 allows the Bürgerschaft to end its term early under specified conditions. New elections must then take place within ten weeks. Such an exception is not a reason to choose a shorter duration in this general question.

A parliamentary election and the election of the head of government are different processes. The Bürgerschaft elects the First Mayor. It can also elect a successor with the required majority during an ongoing term, thereby withdrawing confidence from the incumbent.