One of the problems that I have seen lately is that not all leaders stay for the full term, when there is nothing left to achieve, like an elite athlete retiring after they have all the records then there is a void. Other leadership transitions can occur through party room battles, death, illness or similar; the fact is that a leader that did not face the election is the leader of the government. This individual then sets their own policies, agendas and ideas and starts to put them into motion.
This assumption of power is not a problem if one assumes that each politician is only there to look after their own electorates, and because of this then if the majority of electorates support the new leader then everything is all good. If however you see the government as being affirmed and the representatives are elected on a geographical area only for convenience of getting people to form the government and as a pool of ministers for the duly elected government. where this view is taken then the leader is elected by proxy by the people at the previous election, and when they go, then there is a leader that the general populous did not agree upon.
