There is a lot of “invisible” work that party orgs do. If you want to see why big names and attention alone don’t work, look at the Green Party. They have name recognition, ballot access and even get a bit of the vote each presidential election. What they’re missing is the “ground game” that gives the presence in nearly every race in every precinct, and the local engagement to actually win an appreciable chunk of elections every year (not just the presidential years).

The Heritage Foundation is wild, and one of the most significant public policy groups with deep ties to American conservatism. Basically, any crazy policy that the Republican party has taken on as a major party plank in the past 50 years has a distressing high chance of having its roots in Heritage’s recommendations.

For example, in 1981:

Among the 2,000 Heritage policy recommendations, approximately 60% of them were implemented or initiated by the end of Reagan’s first year in office.

https://en.wikipedia.org/wiki/The_Heritage_Foundation