In a brief statement Wednesday, Little, Brown publisher Michael Pietsch said, “The Casual Vacancy has exceeded our expectations in its first six days in stores, selling 375,000 copies in all formats. We believe it is on track to become the year’s bestselling novel in hardcover.” Nielsen Bookscan tracked sales of approximately 157,000 print copies in outlets they track for the first four days on sale, implying roughly equal sales between print and ebook editions.