The title "Senior Minister" was also a title used in Canada, before "Deputy Prime Minister" was introduced in 1977.
Senior Minister (Simplified Chinese: 国务资政, previously called 内阁资政 before Aug 12 2004) is a political office in the political system ofSingapore is taken by a prime minister or senior cabinet minister when he or she retires from that office, but still has something to offer the government based on his or her long experience. This, however, implies a reliance on a dominant-party system, and several opposition critics find this as evidence for contempt for the political opposition in Singapore.