At National Right to Life's conference this year, Mitt Romney set out to convince anti-abortion leaders he was their candidate. At the podium, he rattled off his qualifications. To a layman's ears, it sounded pretty standard for abortion politics. He wants to overturn Roe v. Wade. He supports teaching only abstinence to teens.

But for those trained to hear the subtleties, Mr. Romney was acknowledging something more. He implied an opposition to the birth control pill and a willingness to join in their efforts to scale back access to contraception. There are code phrases to listen for - and for those keeping score, Mr. Romney nailed each one.

One code phrase is: "I fought to define life as beginning at conception rather than at the time of implantation." The American College of Obstetricians and Gynecologists defines pregnancy as starting at implantation, the first moment a pregnancy can be known. Anti-abortion advocates want pregnancy to start at the unknown moment sperm and egg meet: fertilization. They'd also like you to believe, despite evidence to the contrary, that the birth control pill prevents that fertilized egg from implanting in the womb.

Mr. Romney's code, deciphered, meant, "I, like you, hope to reclassify the most commonly used forms of contraceptives as abortions..."