(In the UK) a written notice, underlined three times to denote urgency, to members of a political party to attend a parliamentary vote.
More example sentences
- Failure by MPs to attend a vote with a three-line whip is usually seen as a rebellion against the party and may eventually result in disciplinary action, such as suspension from the parliamentary party.
- Local councillors are almost powerless, and even the best constituency MP is unlikely to rock the boat against a three-line whip in Parliament.
- A member who defies a three-line whip runs the risk of having the party whip withdrawn; this is tantamount to expulsion from the party.