There is a movement to get third-party and independent presidential candidates on the ballot this year as many Americans have expressed frustration about a rematch between President Biden and former President Trump. But for independent presidential candidates like Robert F. Kennedy Jr. it's a costly uphill battle.This episode: White House correspondent Asma Khalid, political correspondent Ashley Lopez, and voting correspondent Miles Parks. *Our producers are Jeongyoon Han, Casey Morell & Kelli Wessinger. Our editor is Erica Morrison. Our executive producer is Muthoni Muturi. **Listen to every episode of the NPR Politics Podcast sponsor-free, unlock access to bonus episodes with more from the NPR Politics team, and support public media when you sign up for The NPR Politics Podcast+ at *plus.npr.org/politics).Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)