I guess it depends upon the definition of christian!
@Ultraviolet: The Body of Christ is not limited to the Catholic Church. And the Catholic Church is not limited to the Roman Catholic Church. Only God knows who belongs to the Catholic Church and who doesn't. The truth is more complicated than our narrow minded schedules... (please don't justify yourself because I know already all the arguments).
"You cannot support abortion and be in communion with the Catholic Church or consider yourself a Christian." Being a Catholic and being a Christian are not one and the same. There are plenty of derpy schismatics out there who undeniably are Christians in that they believe in the divinity of Jesus, yet they are undeniably not in any way part of the Catholic Church.