In light of the media angst surrounding our presidential choices this cycle, we'll begin by repeating one critically important and almost universally overlooked point. The President of the United States is not the government of the United States. The President of the United States is not even necessarily the leader of the government of the United States.
We're Not Electing a President - We're Electing a Government
The executive is one of three co-equal branches of government. The government of the United States is led by the Speaker of the House and Senate Majority Leader representing their respective democratic institutions, in concert with the President of the United States. The personalities, interpersonal relationships, communication skills, ideological motivation, partisan loyalties, personal ambitions, institutional obligations and dynamic interactions between those three leaders determine the domestic policy and international posture that governs the United States.
The President is also the leader of a political party. When we have a unified one party government, the President may function as the leader of of the United States government if the president's party demonstrate sufficient partisan discipline. When we have a divided government, leadership of the United States government is just as likely to reside in the Congress as it is in the Executive branch. We'll come back to this point, but first some context to explain why divided government is good for us.