well i'm not sure that you can just dismiss it as a joke... but here's a quote of his from the washington post article (which you might want to read):

When asked whether he's pro-life, he said, "You nailed me. I'm not saying that I am. I wouldn't march with either pro-life or pro-choice advocates. This is not meant to be political."

A Democrat, "I don't judge anybody for the decision they make."