I think it is kinda funny to appeal to an organization made up largely of dictatorships and autocracies could oversee elections in the US. Perhaps they could send Chinese, Cuban, and Egyptian delegates to Terra Haute, Indiana to ensure that everything goes smoothly?
The real sign that a democracy has gone wrong is when the procedures set in place to resolve election disputes is not followed. When the President of a country dissolves the Congress, or modifies election rules unfairly, or prevents voters from casting unfavorable votes (such as armed guards at the polls).
The US followed the procedures in place at the time of the 2000 election. The largest media organizations investigated the Florida results and concluded that Bush won narrowly:
The Florida Ballot ProjectQUOTE
This project was conceived and sponsored by The New York Times, The Wall Street Journal, The Washington Post, Tribune Publishing (which includes the Chicago Tribune, Los Angeles Times and a number of other newspapers), CNN, the Associated Press, the St. Petersburg Times and the Palm Beach Post. The news organizations were responsible for securing county cooperation, and paying all associated county fees and ensuring proper presentation of the uncertified ballots. The news organizations will conduct individual analyses of the data and prepare reports for publication and broadcast.
Not surprisingly, the results of this massive undertaking were not widely reported (despite being done by the large media outlets

).
The conclusion?
QUOTE
The news organizations reported their findings on Nov. 12, 2001. Their analyses showed that if the recounts underway, but stopped by the U.S. Supreme Court, had been completed, Bush would still have won by a narrow margin, but if disputed ballots statewide had been recounted Gore would have eked out a slim majority.
The Supreme Court did not change the results of the election. If they had not stopped the recount in the manner they did, that recount would still have gone to Bush. Had the recount followed a different path (and a different set of recount rules), Gore might have won. We can all agree it was very, very close.
What would the UN have done in such a situation? Ruled that the US Supreme Court ruled incorrectly? Do we really want to get into that debate: who has a higher authority over US law: the US Supreme Court or an international body? I doubt it.
This is a bad idea, not because of the election results, but because it is an erosion of our national sovereignty.