unseat
verb [ T ] uk/ʌnˈsiːt/ us/ʌnˈsiːt/
(POLITICIAN)
（尤指通过选举）罢免，使下台
to remove someone from power, especially as a result of an election
The opposition candidate failed by only 39 votes to unseat the cabinet minister. 反对党候选人仅以39票之差而未能将这位内阁部长赶下台。
(RIDER)
使从马上摔下
If a horse unseats its rider, it throws them from its back.