Nothing to do with Gerrymandering, and everything to do with the geographic concentration of Democrat voters. Hillary “won” the popular vote while only winning a plurality of votes in about 15% of counties in the U.S. A Republican who wins a suburban district with 51% of the vote and a Democrat who wins an urban district with 99% of the vote have the same number of votes in the House.
The Rats literally waste 10% of their votes in urban centers. Which sort of lines up with all those 100% turnout districts that are 100% Rat. They CAN’T move those votes because they don’t exist.