Washington Post researches: Sanders changed opinion on contested convention since 2016

The Democratic presidential nominee contender and senator Bernie Sanders said during the Las Vegas debate that he opposes a contested convention where superdelegates weight in their votes. This stands in contrast to his standpoint in 2016 when he was facing Hillary Clinton for the nomination. Back then he said, " The responsibility that superdelegates have is to decide what is best for this country and what is best for the Democratic Party". Even if it would mean to override a pledged delegate majority.