Joe Biden, President of the United States, served as Vice President from 2009 to 2017 and in the United States Senate from 1973 until 2009. A member of the Democratic Party, he made his second presidential run in 2008, later being announced as Democratic presidential nominee Barack Obama's running mate in 2008. He was elected Vice President in 2008 and re-elected in 2012. In April 2019, Biden announced his 2020 presidential campaign. He became the presumptive Democratic nominee in April 2020, was formally nominated by the Democratic Party in August 2020, and defeated Republican incumbent Donald Trump in the November 2020 election.