Comment Re:Explain this to a non-Americal please.. (Score 1) 182
Your questions suggest you're more familiar with a parliamentary system of government where (per Wikipedia) "the executive branch derives its democratic legitimacy from, and is held accountable to, the legislature (parliament); the executive and legislative branches are thus interconnected." In such systems, a majority party (or a coalition) forms a government and from this selects/appoints a top executive (Prime Minister) almost certainly from that party.
Another example of the wiki being wrong, at least as far as Westminster based Parliamentary systems. The executive is the Crown or her representative, eg the Governor General or in the case of Canadian Provinces, the Lieutenant Governor. Parliament (or Provincial Legislature) passes a bill, much like Congress though generally the Upper House has been neutered or eliminated, and when the Bill gets Royal Assent, it becomes law. In theory Royal Assent can be refused resulting in a veto, but in practice it almost never happens (over 300 years in England). The executive also does a few other things such as appointing the government based on which ever party or coalition can pass a budget, no budget, no government, usually resulting in an election, occasionally a different coalition.
In practice, with a majority, due to party solitary, the PM can act like a dictator until the next election as his party will pass most any law the PM proposes/supports and the executive will follow the recommendations of Parliament.
Further, in Canada at least, the courts and especially the Supreme Court acts much like the American courts and Supreme Court and can declare laws (or parts of) null and void due to the Constitutionality. In the recent past and I believe even today in New Zealand, Parliament was Supreme and could pass almost any law