Trifecta meaning : A bet in which the bettor must select the first three placegetters of a race in the order in which they finish. The attainment of three important achievements, qualities, etc. (by extension) A set of three related things, often things that cause problems. (US politics) The complete legislative and executive control of state government by one party: governorship, the upper house, and the lower house of state legislatures. The party that holds all three positions of power is said to have a trifecta. (US politics) Control by one party of the federal government: the presidency and both houses of Congress.