A polyolefin and polyvinylpyrrolidone formulation including (A) an olefin-based (co)polymer, (B) a polyvinylpyrrolidone (co)polymer, and (C) an antioxidant. Also a method of making the composition; a crosslinked polyolefin product made by curing the composition; manufactured articles including a shaped form of the inventive formulation or product; and methods of using the inventive formulation, product, or articles.