Primary elections are taking place Tuesday in Wyoming and Alaska as voters decide whether to back GOP incumbents who have criticized former President Trump. Polls show Wyoming Rep. Liz Cheney trailing a Trump-backed challenger as Sen. Lisa Murkowski of Alaska tries to hold on. Also, former Gov. Sarah Palin is running for a U.S. House seat with Trump's support. Laura Barrón-López reports. 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