Nominees include the likes of Michael Flynn's Eifelheim
So, recently converted sf writer John C. Wright commented somewhere or other that whenever he talks about his Christianity, he lowers his chances of winning a Hugo. We have two books up here that I know depict Christianity: Eifelheim and Glasshouse (and His Majesty's Dragon probably does too). Eifelheim, Elliot tells us, gives a thoughtful and generous depiction, whereas Glasshouse, I can tell you, gives an ugly and simple-minded parody on par, or even sub-par, with Atwood's The Handmaid's Tale