Joe Biden is an American politician who served as the 47th vice president of the United States from 2009 to 2017. Biden also represented Delaware in the U.S. Senate from 1973 to 2009. A member of the Democratic Party, Biden is a candidate for president in the 2020 election (Wikipedia).
Will Joe Biden be the 2020 Democratic Party Nominee for the President of the United States?
This question resolves positively if the Democratic Party officially recognizes (via press release, or any public statement made by official spokespeople or leadership figures of the Democratic Party) that Joe Biden is the Nominee of their party for the office of President of the United States in the 2020 election cycle.
Biden need not be the Democratic Party Candidate on the date of the Presidential Election for this question to resolve positively; he merely needs to become the official Democratic Party Nominee at some point. A nomination for the office of Vice President shall not suffice for a positive resolution.