Democrats who could potentially challenge Kamala Harris are standing down, sources say

President Biden has announced he's ending his reelection campaign and endorsing Vice President Kamala Harris for the Democratic Party's presidential nomination. CBS News' Margaret Brennan, Robert Costa, Willie James Inman and Nancy Cordes have more on the decision and the idea that Harris could face challengers from within her party.

CBS News 24/7 is the premier anchored streaming news service from CBS News and Stations that is available free to everyone with access to the internet and is the destination for breaking news, live events, original reporting and storytelling, and programs from CBS News and Stations' top anchors and correspondents working locally, nationally and around the globe. It is available on more than 30 platforms across mobile, desktop and connected TVs for free, as well as CBSNews.com and Paramount+ and live in 91 countries.

Subscribe to the CBS News YouTube channel: https://youtube.com/cbsnews
Watch CBS News 24/7: https://cbsnews.com/live/
Download the CBS News app: https://cbsnews.com/mobile/
Follow CBS News on Instagram: https://instagram.com/cbsnews/
Like CBS News on Facebook: https://facebook.com/cbsnews
Follow CBS News on Twitter: https://twitter.com/cbsnews
Subscribe to our newsletters: https://cbsnews.com/newsletters/
Try Paramount+ free: https://paramountplus.com/?ftag=PPM-05-10aeh8h

For video licensing inquiries, contact: licensing@veritone.com