I’m not a lawyer and won’t address the merits or lack thereof of the ruling on the particulars of the case. The effect of the ruling was a sweeping change in money in politics. It effectively legalized an oligarchic take over of governance. It’s a fact that money and advertising largely determine outcomes in battleground races. Tipping those races, along with the structural power imbalance in federal politics, means that control of the government is relatively easy and cheap.

https://rooseveltinstitute.org/publications/15-years-after-c...