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Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

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Illustration: Rebecca Zisser/Axios

The Democratic presidential candidates all have something unique that captures their identity. It could be a signature proposal or issue, or a broad theme they'll run on — or it could be their personality if they don't have a substantive idea that stands out.

Here's the one big thing for each candidate — what you should know if you know nothing else about them.

The field

The bottom line: Is this all you need to know? Of course not. Go study them, hear them talk, watch them debate this summer. But this should help you cut through the noise.

Go deeper: A closer look at Joe Biden, Bernie Sanders, Beto O'Rourke, Kamala Harris, Pete Buttigieg, Elizabeth Warren, Cory Booker, Amy Klobuchar, Michael Bennet, Julián Castro, John Hickenlooper, John Delaney, Tulsi Gabbard, Kirsten Gillibrand, Jay Inslee, Wayne Messam, Seth Moulton, Tim Ryan, Eric Swalwell, Marianne Williamson, and Andrew Yang.

Go deeper

Scammers seize on COVID confusion

Data: FTC; Chart: Sara Wise/Axios

Scamming has skyrocketed in the past year, and much of the increase is attributed to COVID-related scams, more recently around vaccines.

Why it matters: The pandemic has created a prime opportunity for scammers to target people who are already confused about the chaotic rollouts of things like stimulus payments, loans, contact tracing and vaccines. Data shows that older people who aren't digitally literate are the most vulnerable.

12 hours ago - Politics & Policy

Biden explains justification for Syria strike in letter to Congress

Photo: Chris Kleponis/CNP/Bloomberg via Getty Images

President Biden told congressional leadership in a letter Saturday that this week's airstrike against facilities in Syria linked to Iranian-backed militia groups was consistent with the U.S. right to self-defense.

Why it matters: Some Democrats, including Sens. Tim Kaine (D-Va.) and Chris Murphy (D-Conn.) and Rep. Ro Khanna (D-Calif.), have criticized the Biden administration for the strike and demanded a briefing.

14 hours ago - Health

FDA authorizes Johnson & Johnson's one-shot COVID-19 vaccine for emergency use

Photo: Illustration by Pavlo Gonchar/SOPA Images/LightRocket via Getty Images

The Food and Drug Administration on Saturday issued an emergency use authorization for Johnson & Johnson's one-shot coronavirus vaccine.

Why it matters: The authorization of a third coronavirus vaccine in the U.S. will help speed up the vaccine rollout across the country, especially since the J&J shot only requires one dose as opposed to Moderna and Pfizer-BioNTech's two-shot vaccines.