lame duck

Thus is happens, that, when a considerable loss arises from such contract, the principal on whole behalf it was made, refuses to fulfil it; in this case, the loss falls upon the broker, without remedy; and if he does not fulfil the contract in default of his prinicipal, he foreits his credit and business, and becomes, in the cant of the Alley, a lame duck.

Congressman Jones was a lame duck and did not vote on many issues that were important to his constituents.