It was neither a popular nor an electoral landslide (it was a below-average electoral margin for a US presidential election, the 17th narrowest of 60 elections)

It was neither a popular nor an electoral landslide (it was a below-average electoral margin for a US presidential election, the 17th narrowest of 60 elections). Yes, the party won a trifecta, but that's a completely separate thing from a landslide.