From his Florida speech today:

I
know there are some Bishops who have suggested that as a public official
I
must cast votes or take public positions – on issues like a woman’s
right
to choose and stem cell research – that carry out the tenets of the
Catholic Church. I love my Church; I respect the Bishops; but I
respectfully disagree.
My task, as I see it, is not to write every doctrine into law. That is
not
possible or right in a pluralistic society. But my faith does give me
values to live by and apply to the decisions I make.

It remains beyond me how a politician can sermonize about “values” and not think those values are empty without a respect for the most vulnerable among us.