Proportionality isn't one to one because half of Americans aren't republican and half aren't democrat. The problem is that polling data is absolutely awful at s

Proportionality isn't one to one because half of Americans aren't republican and half aren't democrat. The problem is that polling data is absolutely awful at showing absolute support for the individual parties platforms and membership numbers are largely biased compared to what the electorate actually wants, but there are plenty of articles about GOP tactics to hold power from a minority bloc position.[1] I wish I bookmarked the statistics on this because they were eye opening to me, but 2016 polls were showing about 40% democrat to 35% republican leaning in the country. So if the public at large is 5% more blue than red, but Republicans hold near-even seats in government, thats a bias in their favor. And as this and many other articles show this isn't the product of random swings of popular support but structurally orchestrated power grabs meant to keep a minority party in power. [1] https://www.theatlantic.com/politics/archive/2018/12/gop-maneuvers-rule-minority-party/577948/ https://www.theatlantic.com/politics/archive/2018/12/gop-man... Edit: And to be fair the Senate isn't a democratic institution whatsoever to begin with. Its going to naturally lean red because there are many states with low urbanization and population that produce permanent seat Republican senators. Because the distribution of states has nothing to do with the distribution of people that lends the senate to be hugely incongruent with the actual ideological makeup of the populace at large.