I read Cardinal Mahony's blog now and then for amusement. And now we know he never decided to vote for Cardinal Bergoglio. The Holy Spirit made him do it:
I picked up my pen to write, and I began. However, my hand was being moved by some greater spiritual force. The name on the ballot just happened. I had not yet narrowed my thinking down to one name; but it was done for me.
I wrote it, then trembled deeply. That's when I knew the Holy Spirit was fully working within the Church of Jesus Christ, and that my role was not to "select" the new Successor to Peter, but to "write down" his name--a name that had been given to me.