But then multi millionaires are the only ones with the leisure and resources to run for office.

So much this, especially when you layer in things like low term limits. Low term limit caps resulted in two things here: politicians having to run for a different positionevery few years and an outsized share of millions running for office. In either case you wind up with a lot of green elected officials every election and none of the reelected ones have strong networks. This seems to have lead to lobbyists having even more sway than usual along with an increase in partisanship.