Only this was written in 1984, and they said it about Geraldine Ferraro, Democratic candidate for Vice-President.
One might even say demography is destiny: this candidate was chosen because he could deliver Texas, that one because he personified rectitude, that one because he appealed to the other wing of the party. On occasion, Americans find it necessary to rationalize this rough-and-ready process. What a splendid system, we say to ourselves, that takes little-known men, tests them in high office and permits them to grow into statesmen. This rationale may even be right, but then let it also be fair. Why shouldn’t a little-known woman have the same opportunity to grow? We may even be gradually elevating our standards for choosing Vice Presidential candidates. But that should be done fairly, also. Meanwhile, the indispensable credential for a Woman Who is the same as for a Man Who - one who helps the ticket.
From a comment in the Volokh Conspiracy.