A highly respected Iowa poll that was canceled from being released amid integrity issues had Joe Biden in fourth place, which could have drastically altered the news cycle and voter considerations in the days before Monday’s Democratic caucuses.

According to leaked results verified by FiveThirtyEight, the final Des Moines Register/CNN/Mediacom poll of likely Democratic caucus-goers before Monday’s first-in-the-nation caucuses had Vermont Sen. Bernie Sanders leading with 22%, Massachusetts Sen. Elizabeth Warren in second at 18%, former South Bend, Indiana, Mayor Pete Buttigieg with 16%, and the former vice president in fourth with 13%.