office-holder

The incumbent, in politics, is the current holder of a political office. This term is usually used in reference to elections, in which races can often be defined as being between an incumbent and non-incumbent. For example, in the 2004 United States presidential election, George W. Bush was the incumbent, because he was the president in the current term while the election sought to determine the president for the following term.
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office-holder /'ɔfis,beərə/ (office-holder) /'ɔfis,houldə/
holder) /'ɔfis,houldə/ danh từ công chức, viên chức
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n. เจ้าหน้าที่รัฐบาล (syn. office-bearer)