Generally, a snap election in a parliamentary system (the dissolution of parliament) is called to capitalize on an unusual electoral opportunity or to decide a pressing issue, under circumstances when an election is not required by law or convention. A snap election differs from a recall election in that it is initiated by politicians (usually the head of government or ruling party) rather than voters, and from a by-election in that the winners will serve an entire term as opposed to the remainder of an already established term.[1][2] Early elections can also be called in certain jurisdictions after a ruling coalition is dissolved if a replacement coalition cannot be formed within a constitutionally set time limit.