Joe Biden will be sworn in as the 46th president of the United States today. Among Democrats, there is a sense of joy and hope, but also of caution and concern.

We speak with a range of Mr. Biden’s supporters, including activists who had originally hoped for a more progressive ticket and longtime fans who embrace his moderation.

Guests:

• Jennifer Medina, a national politics reporter for The New York Times.

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Background reading: 

• Urging unity, Mr. Biden has tried to focus on his policy plans. But many of those who elected him are still fixated on his predecessor.
• Mr. Biden’s long career in public office spanned eight presidents. Now, at 78, he will join their ranks.

For more information on today’s episode, visit nytimes.com/thedaily