Out of curiosity, how far back does the historical data go for the "national popular vote" in House of Reps elections, and what's the biggest margin by which the losing party won the national popular vote? E.g., in 2012, the GOP held their majority in the House, despite losing the national popular House vote by about 1%. But are the examples from decades ago when that number was much larger?
EDIT: Looks like in 1942, The Dems held the House despite losing the popular vote by 4 points:
https://en.wikipedia.org/wiki/United_States_House_of_Representatives_elections,_1942Not sure if that's the record though.
