For further reading, I recommend learning about the Citizens United vs FEC case that vastly increased the amount of money going to politicians, far over individual donation limits.
Even if we magically fixed the electoral system tomorrow, the results would be superficial. Sure, we might see more Democrats in office—but if they’re still beholden to massive, uncapped donations, how can we expect them to enact real, meaningful change?
This problem with money in politics is not something that only affects one party. It's a systematic issue that needs regulation. Without real regulation on money in politics, everything else is a band-aid on an open and festering wound.
Both of which are infinitely better than what we have now, which is bastardized worst elements of both.
But because both sides will never agree we'll get neither, only the current hellscape.