Each state, regardless of the size of its population gets to send two people to the USA Senate. Since urban areas with large populations tend to be more politically liberal than areas with much smaller populations (such as rural areas), political conservatives get more representation in the US Senate than would otherwise be the case.
That protects rural areas from the "tyranny of the majority" where a few large cities would effectively dictate what happens in the entire country, to their benefit.
It's a great system and it's worked.