Regnery Publishing, a conservative publishing house, said Monday that it had picked up a book by Senator Josh Hawley, Republican of Missouri, after Simon & Schuster ended its contract to publish it in the wake of assault on the Capitol.

Mr. Hawley had come under criticism for challenging the results of President-elect Joseph R. Biden Jr.’s victory and was accused of helping incite the mob that stormed the Capitol on Jan. 6. His book, “The Tyranny of Big Tech,” is scheduled to be published this spring, Regnery said.

Thomas Spence, the president and publisher of Regnery, said in a statement that the publishing house was proud to stand with Mr. Hawley. “The warning in his book about censorship obviously couldn’t be more urgent,” Mr. Spence said. His company’s statement said that Simon & Schuster had made Mr. Hawley a victim of cancel culture.