Today we launch Part One in our series on pivotal moments in the lives of the 2020 presidential front-runners. In studio with \u201cThe Daily,\u201d Pete Buttigieg, the mayor of South Bend, Ind., talks about how his lifelong political ambitions were complicated by the secret he kept for decades.\n\nGuests:\xa0Pete Buttigieg, mayor of South Bend, Ind., and 2020 Democratic presidential candidate.Jeremy W. Peters, a politics reporter in the Washington bureau of The New York Times.\n\n\n\ufeff\u201cThe Candidates\u201d is a new series from \u201cThe Daily\u201d exploring pivotal moments in the lives of top presidential contenders in the 2020 election. For more information on today\u2019s episode, visit nytimes.com/thedaily.