Hello, constitutional ponderers...
- there had never been disciplined political parties, loyal to themselves from election to election, when the authors wrote the Constitution. That makes the Electoral College reasonable, within what they knew. Even the British parliamentary parties were ever-shifting interest-gangs.
- I think that the writers assumed that important men (often elected by voice vote) would gather, deliberate, and choose. Big surprise during the 1790's, although secret ballot was not common for a long time.
- On Hamilton, Madison, Wilson, and their faction against the states, I'm working from a recent biography of George Mason, which quotes some of the letters before the Constitution was written.
- It is also interesting to read Henry Adams Histories of the Jefferson and Madison administrations. Jefferson, after he had whacked Madison on the side of the head for being too friendly to Hamilton

, proceeded to organize the strictest of strict construction policies. Adams observes that Jefferson could not lead the country without trimming off much of his strictness.
- Consider the Louisiana Purchase. Jefferson wrote to some of his allies asking if they should first get a constitutional amendment allowing the President to expand the territory of he US. In fact, while there was the Northwest Ordinance (which took a million gallons of sweat to pass) that defined how states should be organized out of territory given to the US in the 1983 treaty, there was no precedent for absorbing a large territory containing people who had not asked to belong to he Union. However, given that all goods from west of the Appalachians had to be shipped down the Ohio and Mississippi to the Spanish/French port of New Orleans, everyone feared that he western territories might split off to become independent countries. Before the great canals, it was misery to ship east from Pittsburgh even to Philadelphia.
So...Jefferson could stick by his strict constructionism, or he could buy Louisiana without authorization, and save the Union.
If you want, I'll look up some of he Hamilton/Madison "nationalist" correspondence that talks about their hopes that the states would vanish.
That doesn't mean that everyone agreed, but it was in the heart of many leaders who had seen the states tie up the Confederation government.
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Better than the Electoral College? It's a quirky thing that works, mostly, but in no way like the authors expected. It is one part that has not evolved, in practice. I don't now if proportional voting would be better, but I doubt it.
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By the way, one central problem with the old discussion about whether Bush should be impeached is that the authors spent almost no time discussing the impeachment section. Check Madison's Notes, and you'll see that the discussion covers only a few pages, at the end of the convention...suggesting that the delegates were tired and just wanted to toss the whole issue. According to Henry Adams, the first time anyone tried to impeach a judge, they couldn't decide what the Constitution had intended.