Vermont Sen. Bernie Sanders, whose insurgent 2016 presidential campaign reshaped Democratic politics, announced Tuesday he is running for president in 2020. The 77-year-old self-described democratic socialist challenged Hillary Clinton in the Democratic presidential primary in 2016. Shortly after announcing her exploratory committee, Warren hired Brendan Summers, who managed Sanders's 2016 Iowa campaign. In 2016, Sanders lost the South Carolina primary, which features a heavily black electorate, by 47 points. In the run-up to Sanders's 2020 announcement, persistent allegations emerged of sexual harassment of women by male staffers during his 2016 campaign.

Source: CBC News February 19, 2019 12:01 UTC