NBC News reports that President Barack Obama will formally former Vice President Joe Biden in the 2020 election on Tuesday.<br />According to Business Insider, Biden became the presumptive Democratic nominee last week after Bernie Sanders dropped out of the 2020 race.<br />Obama held off on endorsing a Democratic candidate when the primaries were more competitive.<br />However, several aides told Politico Obama worked behind the scenes to help Biden's campaign to clinch more endorsements.
