sentences:  Israel's electoral system operates within the parameters of a Basic Law ("The Knesset") and of the 1969 "Knesset Elections Law".The Knesset's 120 members are elected by secret ballot to 4-year terms, although the Knesset may decide to call for new elections before the end of the 4-year term, and a government can change without a general election; since the 1988 election, no Knesset has finished its 4-year term.In addition a motion of confidence may be called.