From the moment Donald Trump secured the 2016 presidential nomination, throughout his Access Hollywood sexual-assault tape scandal, and even right up until today, Republican elected officials have overwhelmingly given him their full backing. There’s one incredibly important reason for why so many House Republicans in particular continue to stand by him: He carried the vast majority of the districts they represent by a very wide margin. This fact is a crucial piece of context for why House Republicans so steadfastly support Trump even when polls show his national approval rating in the low 40s and debacles like National Security Adviser Michael Flynn’s resignation unfold almost daily.