https://www.tabletmag.com/sections/news/articles/how-influential-is-aipac
Read the whole thing, but a few snips to illustrate
One could be forgiven for thinking that the organization under discussion was one of the biggest political spenders in America. In reality, AIPAC is a public affairs committee and not a political action committee; as a result, the group itself donates nothing to candidates or campaigns. By far the largest pro-Israel donor to political candidates last election cycle was JStreetAC, which gave entirely to Democrats.
. . . The way AIPAC is talked about, youd think theyd be a lobbying juggernaut, surely one of the largest in the nations capital.
Wrong again: For the period between 1998 and 2018, AIPAC didnt make a dent in the Center for Responsive Politics list of the top-spending lobbying groups. The US Chamber of Commerce spent $1.5 billion during that span, with the National Association of Realtors coming in a distant second, at $534 million.
. . . In 2018, total pro-Israel lobbying spending was around $5 million, of which AIPAC accounted for $3.5 million. In contrast, Native American casinos spent around $22 million that year. By Tablets count, AIPAC was the 147th highest-ranked entity in terms of lobbying spending in 2018.