The American voter is sidelined the second their elected official is sworn in, and immediately reneges on everything they said they stood for in favor of their moneyed interests. 90% of politicians have no intent whatsoever of fixing problems, after all those problems are what got them elected.
It's obviously fine to be this cynical, but I think the particular shape your cynicism takes is incorrect^ and I also tend to think people who are overly cynical willingly reduce their ability to affect change
^ the description of campaign promises feels very 90s to me. We tend to have a lot of information about how our elected officials act. I think most of them believe more of what they're saying or advocating for (although the reasons why they believe those things are fairly widely varied)
Some people think Elizabeth Warren is pure evil incarnate, and I think she considers herself as a policy wonk who loves nuance and is trying to protect citizens from ruthless capitalist entities.
The same is more or less true on the other side (I'm not sure who the analog is exactly, but a republican Elizabeth Warren would imagine she is protecting companies and citizens from government overreach)
