die Wiederwahl
reelection
The election of a person again to an office or position that they already hold.
Der amtierende Bürgermeister stellt sich im Herbst der Wiederwahl.
The incumbent mayor is standing for reelection in the fall.

reelection
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reelection
The election of a person again to an office or position that they already hold.
Der amtierende Bürgermeister stellt sich im Herbst der Wiederwahl.
The incumbent mayor is standing for reelection in the fall.

The word is made up of the prefix 'wieder-' (again) and 'Wahl' (election). So it literally describes an 'erneute Wahl' (election again).
Die Partei bereitet sich auf die Wiederwahl ihrer Vorsitzenden vor.
The party is preparing for the reelection of its chairwoman.
A very common fixed phrase is 'sich zur Wiederwahl stellen' (to stand for reelection). It means that a person is running again for the same office.
Die Präsidentin hat bestätigt, dass sie sich zur Wiederwahl stellt.
The president has confirmed that she is standing for reelection.
In a political context, 'Wiederwahl' (reelection) is often combined with verbs such as 'anstreben' (to seek), 'gewinnen' (to win), 'schaffen' (to manage/achieve), or 'verlieren' (to lose).
Mit seinen neuen Reformen hofft er, die Wiederwahl zu schaffen.
With his new reforms, he hopes to secure reelection.
choice / election
'die Wahl' and 'die Wiederwahl' both belong to political or organizational voting. 'die Wahl' is the general process in which votes are cast. A new person may be elected, or someone who is already in office may be elected again. 'die Wiederwahl' refers only to the case where a person is elected again to the same office. The words can be confused because a 'Wiederwahl' is also a 'Wahl'. The important question is: Is it about the election date in general, or about the same person being elected again? For the general process, you say 'Wahl'; for being elected again, you say 'Wiederwahl'.

Die Bürgermeisterin hofft auf ihre Wiederwahl im nächsten Jahr.
The mayor is hoping for her reelection next year.
Vor der Wahl informieren sich viele Bürger über die Parteien.
Before the election, many citizens learn about the parties.