From the BBC:
Some of his older black supporters will tell you candidly that there is a bit of disbelief in there too they never expected in their lifetimes to be able to support an African-American candidate with a real chance of winning the White House.
Political campaigning is about mapping strategies, booking halls, buying advertising and beating rivals.
But every so often, in private, Mr. Obama and his closest advisers must surely lift their eyes to history's horizon and reflect on the powerful symbolism of his candidacy in a country which still lives with the legacy of racial division.
Within Mr. Obama's lifetime, white racist groups in the Deep South tried to intimidate black voters out of registering to take part in elections.
Now he has a real chance of becoming president.
Regardless of what happens on Nov. 4, today is a good day.