Today marks the complete death of an era of American conservatism, and likely the end of one of the most legendary runs of Senators from a seat in American history (Carl Hayden - Barry Goldwater - John McCain): just three Senators over the course of 89 years.
He was a mixed bag, and given the things he said close to death, he might have been the first to tell you that. But today is not a good day in American history. Likely the Republican in American politics with the most guts left until today, the country is worse off without him.