evidence: But during the Progressive Era, which spanned the turn of the century, the Democrats saw a split between its conservative and more progressive members. As the Democratic nominee for president in 1896, William Jennings Bryan advocated for an expanded role of government in ensuring social justice. Though he lost, Bryan’s advocacy of bigger government would influence the Democratic ideology going forward. [...] The slate of candidates running for president from the Democratic Party in the 2020 election was historically large and diverse. Joe Biden, Elizabeth Warren, Bernie Sanders, Pete Buttigieg, Kamala Harris, Beto O’Rourke, Corey Booker, Andrew Yang, Amy Klobuchar, Tulsi Gabbard and Tom Steyer were among the major candidates aiming to take on President Trump. After a slow start to his campaign, former Vice President Joe Biden won his party's nomination. Biden chose California senator Kamala Harris as his vice presidential running mate, making Harris the first Black and Asian American woman to be named on a major party's ticket. Biden ran as a moderate, and pledged to unify the country after a divisive four years under President Trump. On November 7, Biden was declared the winner of the 2020 presidential election; he took office as the 46th U.S. president on January 20, 2021, alongside a fully Democratic Congress.