Former President Obama’s new memoir, “A Promised Land,” is on pace to become the bestselling presidential memoir in modern history, outstripping the first-day sales of wife Michelle Obama‘s own bestselling memoir.

“A Promised Land” set a first-day sales record for Penguin Random House with nearly 890,000 copies sold, The Associated Press reported Wednesday.

“We are thrilled with the first day sales,” David Drake, publisher of the Penguin Random House imprint Crown, said in a statement. “They reflect the widespread excitement that readers have for President Obama’s highly anticipated and extraordinarily written book.”