Michael Bloomberg (born February 14, 1942) is an American politician, businessman, and author. He is the co-founder, CEO, and majority owner of Bloomberg L.P. Bloomberg was the mayor of New York City from 2002 to 2013. He was a candidate in the Democratic Party primaries for the 2020 United States presidential election.
Bloomberg was a lifelong Democrat until 2001, when he switched to the Republican Party before running for mayor. He became independent in 2007, and registered again as a Democrat in October 2018.
In 2004, he endorsed the re-election of George W. Bush and spoke at the 2004 Republican National Convention. In 2012, he endorsed the re-election of President Barack Obama. Bloomberg endorsed Hillary Clinton in the 2016 election, and spoke at the 2016 Democratic National Convention. When he dropped out of the 2020 Democratic presidential primaries, he endorsed the eventual nominee Joe Biden.