Julián Castro

The Democratic presidential field started out as the most diverse ever, and the largest in at least 40 years. It's since winnowed down to one.

The former housing secretary backing the Massachusetts senator is the most high-profile endorsement yet from a former candidate.

The former secretary of housing and urban development and former San Antonio mayor was among the first to advocate for decriminalizing illegal border crossings. Other candidates followed his lead.

Iowa is more than 90% white. But the state's demographics are slowly changing, and the 2020 campaigns have expanded their efforts to court Latino, Asian and black voters there.

Marianne Williamson by far gets most of her money from women. Meanwhile, Donald Trump and Andrew Yang get relatively little of their money from women.

Elizabeth Warren faced new scrutiny, Pete Buttigieg controlled multiple exchanges, and the potential conflicts of interest of Joe Biden's son got relatively little focus.

The asylum-seekers, who were in Matamoros, Mexico, because of the Trump administration's Migrant Protection Protocols policy, said they faced violence and harassment because they identify as LGBTQ.

The Oct. 15 debate will feature more candidates together on one night than in previous months. Billionaire activist Tom Steyer and Rep. Tulsi Gabbard will join 10 candidates who appeared in September.

"I believe that the best thing for the country would be not only impeachment but removal," the presidential candidate told NPR when asked if the House inquiry was good for the country.

Something happened this week that was hard to pin down, but it was palpable. Not the contrast of night and day, but perhaps the difference between dusk and dawn.