Democratic presidential candidate Julian Castro told NewsHour Weekend on Saturday that his campaign has been about the most vulnerable Americans, “people that are often cast aside and marginalized.” The former Housing and Urban Development secretary joins Yamiche Alcindor to discuss…

Sen. Elizabeth Warren's emergence as a Democratic frontrunner made her a target during Tuesday's debate, as other candidates vied for attention in what polls suggest is becoming a two-way primary race between her and former Vice President Joe Biden.

The leading 2020 Democratic presidential candidates will take the debate stage Tuesday and Wednesday in Detroit looking to further define their candidacies, take on rivals, and score a viral moment. Here's what we'll be watching in the debates.