The Senate wasn’t designed to represent “the people” anyway, it was designed to represent the interests of the sovereign states — of which DC is not. The House of Representatives is what represents “the people.”
There is a persistent and fundamental lack of understanding of the US government by many people, case in point is the complete ignorance about the purpose of both the Senate and the electoral college. The US is a federal republic, not a democracy.
This has nothing to do with Republicans and Democrats, but with the Constitution.