Here is more from the New York Times:
The Republican architect of Project 2025 — the right-wing blueprint that Democrats made a rallying cry in the presidential election last year — is mounting a primary challenge to Senator Lindsey Graham of South Carolina, saying he isn’t sufficiently devoted to President Trump’s political movement.
As he begins his challenge, Paul Dans, who is not originally from South Carolina, starts out as a distinct underdog. Mr. Graham, who has the support of Mr. Trump, has won past primaries handily despite appearing vulnerable, and he is likely to have a significant financial edge.
But Mr. Dans plans to run highlighting the work of Project 2025, from which Mr. Trump distanced himself during his campaign before enacting significant portions of it into his government.
Mr. Dans joined the Heritage Foundation in 2022 and started Project 2025, although he later had a falling out with the think tank that led to his departure.