A parliamentary mandate is not automatically a government office.
Someone elected as a member takes part in parliamentary work. This includes deliberation, political debate and decisions in the relevant parliament. “Parliamentarian” and “elected representative” are related terms.
The free mandate is particularly important for Bundestag members. They are not simply to execute orders from a party, association or individual voters. Political loyalties and shared programmes exist, but a legally binding instruction cannot replace their own decision of conscience.

The other three answers
The distractors refer to individual offices or other forms of state representation.
chancellors.
Chancellor is the title of the head of the Federal Government. Not every member of parliament holds that office.
ambassadors.
Ambassadors represent Germany diplomatically in a host country. This is not the title for elected members of a parliament.
minister-presidents.
Minister-Presidents head state governments. Although they may also hold a parliamentary mandate, this government office does not describe all members of parliament.
Representation here does not mean an instructed delegate’s role.
The existing English answer says “representatives/delegates”. “Members of parliament” is more precise for this German role. In particular, “delegate” must not imply that individual voters may issue binding voting instructions to a Bundestag member.
A person may combine political roles. The question nevertheless asks for the common term for elected parliamentary members, not every additional office one particular person may hold. That is the key distinction between a parliamentary mandate and a government office.
Article 38 · Basic Law ↗Parliament → elected members. Head of government → separate office.
Learn the role through its institution. A parliamentary member is an Abgeordnete or Abgeordneter, not automatically a Chancellor, Minister-President or ambassador.
Three words for this question
- der Abgeordnete / die Abgeordnetemember of parliament
- An elected member of a parliament.
- das Mandatmandate / parliamentary seat
- The legal position of an elected member of a representative assembly.
- die Weisungbinding instruction
- An authoritative order; Bundestag members are not bound by it when exercising their mandate.
