“This guy has no clue apparently. The house is elected by popular vote in each District represented.
How could they win the popular vote but lose the house?”
You have no clue.
Blowout wins in Democrat districts, close losses in Republican districts. That would lead to a "win" in the fictional overall national "popular vote" for the House. You're awfully nasty and negative about others having no clue when you're on shaky ground yourself.