John McCain has been running like a madman for President for closing on a decade now.
But Hillary Clinton is ambitious.
Mitt Romney's entire campaign pretty much depends on Right Wing Republicans believing him when he says that the whole four years he was governor of their state he was lying to the people of Massachusetts.
But Hillary Clinton is inauthentic.
Rudy Giuliani openly courts anti-immigration racists, takes phone calls from his wife in the middle of speeches to show what a loving husband a serial adulterer can be, runs from conservative group to conservative group promising that despite his somewhat liberal record as mayor of New York City he'll be the kind of President Right Wing authoritarians will be proud to call their own, and punctuates every other sentence with the words Nine and Eleven.
But Hillary Clinton is the opportunist.