Access to influence policy and legislation. But they seem to get mixed results. There have been a few studies that looked at the actual effects of lobbying. I may have to dig around but i can track them down. It's very interesting because it upturned what my assumptions were about lobbying.

It seems they find candidates that are already somewhat aligned and work no push the scale further. Like, someone like Latimer wouldn't need a lot to push the scale in favor of AIPAC objectives.

It's very interesting to read up on this.