lame duck

an unsuccessful person or thing

Politics:
-An elected official whose power is reduced because the person who will replace them has already been elected
-A person who still has time to serve in an elected position despite not being elected again in a recent election, with the result that the person has no real power.

-Examples-
---Finally, highly fractionalised parties in government enervated the authority of the executive and rendered prime ministers vulnerable to the problem of the lame duck.
---Therefore, in a perfect election, during the sitting president's lame duck period, the president-elect usually signals only obliquely that there will be a ritual burial of the predecessor.

Business:
-An unsuccessful person, thing, or organization:
-A person in a position of authority in a company or organization whose power is reduced because their time in the job is about to end:

-Examples-
---This is regarded by many as a lame-duck initiative that has failed to deliver its promises.

This is regarded by many as a lame duck initiative that has failed to deliver its promises.