On February 19, 2019, Sanders announced a second presidential campaign for the Democratic nomination in the 2020 presidential election. His 2020 campaign had raised over four million in donations from individual donors, the largest than any other presidential candidate in history. In early 2020, Sanders was seen as the front-runner for the nomination after winning the first three primary contests and leading in national polling numbers, but after Joe Biden won most of the Super Tuesday contests in March the primary became more competitive. After failing to win many primary states, Sanders ended his campaign on April 8, 2020, later supporting Biden's campaign for President.