As Robert F. Kennedy Jr. tries to get on the presidential ballot in all 50 states, he’s confronting fierce resistance from his opponents.Rebecca Davis O’Brien, who covers campaign finance and money in U.S. elections for The New York Times, discusses the high-stakes battle playing out behind the scenes.Guest: Rebecca Davis O’Brien, a reporter covering campaign finance and money in U.S. elections for The New York Times.Background reading: Surprise tactics and legal threats: inside R.F.K. Jr.’s ballot access fight.Here’s where third-party and independent candidates are on the ballot.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.