The answer only includes the sub-set of former MPs involved in our project, and we know a bit about their backgrounds already. However, for more specific detail on any religious training, I emailed our summer intern, Devan Sommerville, for help. Devan compiled excellent biographical packages on 139 MPs involved in our project and is a wealth of knowledge on politics in general.
Several of the former MPs in our sample had formal religious training. The Hon. Bill Blaikie (NDP Elmwood-Transcona) is an ordained minister in the United Church. Raymond Gravel (Bloc Repentigny) is a practicing priest of the Roman Catholic Church. Those are the former MPs that stand out in my mind from our sample, and there may have been another one or two with theology degrees.
Your questioner also wondered about party affiliation. While there certainly are some vocal Christians in the Conservative party (Stockwell Day, Chuck Strahl, Harold Albrecht, David Sweet, Maurice Vellacott, etc), it is not a purely “low-brow” Conservative issue. Many have post-secondary education, although not in theology. Furthermore, longtime Toronto Liberal MPs like Tom Wappel (ret) (Law – Queen’s) and John McKay (Law – Queen’s) are active Christians as well, and have legislated from that perspective. In fact, the strongest bastion of Liberal opposition to the gay marriage amendment was in the GTA (Scarborough, Etobicoke and
So there's a bit more colour on the question. As with many things, not as straightforward as it may seem.