Vote of no confidence
From Tardis Wiki, the free Doctor Who reference
A motion of non-confidence (alternatively vote of non-confidence, censure motion, no-confidence motion, or confidence motion) is a parliamentary motion traditionally put before a parliament by the opposition in the hope of defeating or weakening a government, or, rarely by an erstwhile supporter who has lost confidence in the government. The motion is passed or rejected by means of a new parliamentary vote (a vote of non-confidence).
The British House of Commons planned a Motion of no confidence for Harriet Jones with rumors of her ill health. (DW: The Christmas Invasion)