Imagine that you have a nation that is one thousand square miles in size. Ninety percent of the nation is taken up by a city of ten million people. The other ten percent is empty desert and wilderness, populated only by a grizzled hermit named Jim. Tasked with inventing a representative political system for this country, you say, “Well, looks like there are two areas here, so I’ll draw a line between the city and Jim’s land, and I’ll give each an equal number of representatives. When the ten million city people want something they will have to negotiate with Jim, who has a power equal to all of them combined.”
Stupid, right? Yes. This is the United States Senate. This is quite literally the design of the U.S. Senate…
Additionally, the House was weakened with the Apportionment act of 1911. Instead of growing with the population as it was originally designed, it fixed the number of congresspeople at 435. This skews the electoral college such that the less densely populated states have more power over presidential elections.