Three past American presidents have confronted the possibility that members of their own party would support their impeachment. Only one, Richard M. Nixon, left office because of it, when Republicans eventually abandoned him. But what can we expect this time, in the impeachment inquiry of President Trump? 

Guests: Peter Baker, the chief White House correspondent for The New York Times and an author of “Impeachment: An American History,” in conversation with Natalie Kitroeff, a business reporter for The Times. For more information on today’s episode, visit nytimes.com/thedaily. 

Background reading: 

• The impeachment inquiry was prompted by a July call between President Trump and the Ukrainian leader. Details of a second call have now emerged, in which Mr. Trump pressed the Australian prime minister to help investigate the Mueller inquiry’s origins.
• In a news analysis, Peter Baker explains how preventing foreign influence is one of the oldest issues in America’s democratic experiment.