Gov. Ron DeSantis of Florida began the race for the Republican nomination with high expectations and a clear argument: that he was a political fighter with a solid record of conservative achievements in his state. Now, he appears to be in a downward spiral.Shane Goldmacher, a national political reporter for The Times, explains why the DeSantis campaign is stumbling so badly.Guest: Shane Goldmacher, a national political reporter for The New York Times.Background reading: Governor DeSantis, who has been losing ground in polls and dealing with staffing, spending and messaging issues, tweaks his messaging and tactics.Here are four major challenges facing his campaign.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.