The U.S. is nearly unique in its separation of president and congress. The overwhelming number of republics in the world are parliamentary. In a parliamentary republic, the voter does not specifically vote for the representative (Minister of Parliament, or MP) that the voter personally prefers, but the candidate from the party that most nearly represents the voter’s philosophy. (This is one reason that most countries have so many parties: any goup who is disaffected by the hijinks of one party may start a new party. If the U.S. used a parliamentary system, it is likely that the Republicans would have divided into two parties in the 1970’s: the religious right and those fiscal conservatives who were also intent on maintaining the separation of church and state.)
The voters never directly elect the Prime Minister. Instead, each party engages in bloody internecine warfare to find out who will be the party’s leader. Then the voters all go to the polls and vote for the party that they think will best represent them.
If party A has a clear majority of MPs (or in the lower house in a bi-cameral arrrangement), that party’s leader becomes the Prime Minister and then “forms a government” by picking a handful of MP’s and assigning them duties as his cabinet. (Such decisions are generally made long before the election. Each party–even those who are not in power–maintains a list of the members who would assume which cabinet positions if they suddenly gained power. I believe that these ministers-in-hope are called the “shadow government” with no sinister implications in the name.)
Of course, often party A cannot get enough members elected to have a clear majority in the Parliament. On those occasions, the Prime Minister will go to other parties and ask if they will (temporarily) join forces with party A so as to prevent Party D from getting too much power. Part of the bargaining that goes on during these discussions involves arranging which cabinet positions will be given to which minority party MPs to entice them to join with party A. When party A has enough members in their coalition of parties to be a majority, the government is “formed” with each of the selected MP’s assuming the various cabinet positions.
One good feature of a parliamentary system is that the executive officer is never from a party in direct opposition to the rest of Parliament (such as we have seen under Clinton for the last few congressional terms). Of course, the disadvantages are that if a coalition is in power, minority parties can manage their own form of gridlock by threatening to pull out of the government if they don’t get their way, forcing the Prime Minister to call for new parliamentary elections. If opposition party(parties) (those parties not in the government) have been gaining popularity, the PM must risk losing power, completely if the parliamentary elections go against his party. (If the rest of his party feels that the elections were a mistake, he will be voted out of his position of leadership, so the PM has a vested interest in keeping the the little parties in his coalition happy. This can (not must) result in small parties holding the government hostage to their demands for policy.)
One aspect of this that is hard for U.S. folks to comprehend is that “the voters” never vote directly for the PM. They only vote for the Minister of Parliament for their district, choosing the party that currently has the leader that they would prefer see “run” the country.
(It could be argued that U.S. voters have as little say in picking the party leader as in a parliamentary system–particularly in the days of brokered conventions and “smoke-filled rooms”, but with our current Primary Election system, we have an illusion that the people have a say, whereas in a parliamentary system the leader is picked specifically by the already-elected MPs.)
Better? Worse? Hey, it works. Could a congressional system country switch to be a parliamentary system, or vice versa? Possibly, although it would be a real culture shock to any who tried.
Given my understanding of the parliamentary system that you just waded through, I am confused by pushkin’s comment. Is there a system in place in the UK to prevent the formation of coalition governments? I was not aware of any way to avoid them in a parliamentary system (other than to simply win majorities at each election). What have I been missing?