Saturday’s South Carolina primary is a crucial test for former two-term Gov. Nikki Haley’s effort to puncture former President Donald Trump’s air of inevitability. Trump has big leads over Haley in both polling averages and the number of delegates already allocated. South Carolina Public Radio’s Thelisha Eaddy joins John Yang from Haley’s election night headquarters in Charleston to discuss. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: TikTok: https://www.tiktok.com/@pbsnews Twitter: http://www.twitter.com/newshour Instagram: http://www.instagram.com/newshour Facebook: http://www.pbs.org/newshour Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe