Longman Dictionary of Contemporary English
vote of no confidence
noun
EXAMPLES FROM CORPUS
▪ At the beginning of November 1989 Namaliu survived what was becoming the regular six-monthly vote of no confidence.
▪ Happily, before the vote of no confidence, parliament set it right by passing a new electoral law.
▪ He was ousted after losing a vote of no confidence in the federal assembly.
▪ Mr Trimble could face a leadership contest or a vote of no confidence at the party's annual general meeting next week.
▪ The vote of no confidence was a final humiliation for a government that had been clinging to office.
Wiktionary
vote of no confidence
n. (context politics legal English) A parliament motion representing the lack of confidence of a parliament in the standing government. A pass motion of no confidence usually results in the government's fall.