How the Debates Trump and Biden Agreed to Break With Tradition

Presidential debates have been a staple of campaigns for decades, but the ones being scheduled between President Biden and former President Donald J. Trump are taking an unusual turn, with only two planned — neither of which is sanctioned by the group that has traditionally run the debates — and the first one set before either candidate has officially been nominated.

No general-election debate has ever been held earlier than Sept. 21, nearly three months later than the June 27 date proposed for the first one this year, according to historical records kept by the Commission on Presidential Debates. And no debate season has ever concluded before Oct. 13, about a month later than the Sept. 10 date proposed for the second one this year.

That is just one way in which the 2024 debates are likely to stand out. Mr. Biden is asking for news organizations to host them, rather than the commission, which has organized the debates for every presidential election since 1988. And their format could differ, too, given that Mr. Biden has asked that there not be a live audience. (Mr. Trump agrees on jettisoning the commission but disagrees on the live audience.)

The debate tradition itself is, in the scope of U.S. history, pretty modern.

The first televised general-election debates were held in 1960, but they would not be repeated for 16 years. The tradition that now exists — with debates conducted every four years and a refusal to participate constituting a breach of norms — dates back less than 50 years, to 1976.

The inaugural 1960 debates are remembered for how unprepared Richard M. Nixon, the Republican candidate, was for the bright lights of live television. During the first of four events that year, on Sept. 26, the studio lights at