Definitely not. Ralphie belongs solely to the world of A Christmas Story and has no presence in Elf. The characters and settings of these two films are completely different.
Definitely not. 'A Christmas Story' and 'Elf' are different movies with no character crossover. Ralphie is unique to the former and has no presence in the latter.
Ralphie was strictly a character in 'A Christmas Story' and didn't make an appearance in 'Elf'. The two movies have completely separate casts and storylines.
To be honest, I don't have a clear answer on whether Ralphie from Christmas Story is LDS. There might not be explicit details available on this specific aspect.