You are correct ... to think that McCain will win is to journey into political fantasia.
It is a most sad state of our Republic, but the cold hard fact will be evident soon that the next President of the US will be Mr. Barack Hussein Obama.
From a purely legalistic point of view, I suggest that the Clinton adviser who so boldly declared that an Obama victory would be irrelevant, read the 19th amendment.
It provided for (Forgive me as this is not intended to be sexist in any way ... merely legal!) degenderization of the right to vote, and political standards have been set for women to serve in political office, with one caveat: that being the office of President. If Mrs. Clinton wins the nomination, the Supreme Court will be forced to visit the matter, and the Congress will have to provide an amendment to the amendment to allow a woman the right to hold the position of President, else a violation of the Constitution will have presented itself.
Apparently the Clinton legal advisors have not thought that far ahead ... if anything is irrelevant/moot, it is the campaign of Mrs. Clinton, and the attempt by herself and her husband to once again control the American political scene.
How do you figure that? Amendment XIX merely talks about the right to vote, and I don't know anything else in the Constitution that restricts the office of President to males.
Would you care to explain which hat you pulled that bunny out of? To think you started that by talking about “political fantasia.” There is nothing in the Constitution restricting the gender of the President.