With a little more than a week before the opening caucuses, less than 1 percentage point separates Biden and Sanders in Iowa, according to polling averages compiled by RealClearPolitics.
In 2016, the Register endorsed Clinton, not Bernie.
Yet in a slew of recent polls fielded in the state, the former Vermont congressman and mayor of Burlington has demonstrated leads on the rest of the White House hopefuls.
Earlier in January, he had a narrow advantage of 3 percentage points over closest rival Warren in the Des Moines Register/CNN/Mediacom poll, considered to the gold-standard survey in Iowa. Then, on Saturday morning, the New York Times/Siena College poll had him at 7 percentage points ahead of second-most popular candidate former South Bend, Indiana, Mayor Pete Buttigieg.