Hillary Clinton to Return to 'Tonight Show' This Month

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Hillary Clinton

This will be Clinton's third appearance on the late-night ratings leader.

Democratic presidential nominee Hillary Clinton will be stopping by The Tonight Show Starring Jimmy Fallon on Monday, Sept. 19 — her third appearance on the late-night ratings leader during her run for the presidency.

The appearance comes a week ahead of the first official presidential debate with Republican candidate Donald Trump. The two candidates made their first joint appearance last night on NBC's Commander in Chief Forum, hosted by Matt Lauer, where they discussed issues of national security, military policy and veterans affairs.

The televised event, which featured a live question-and-answer session with veterans and active-duty service members, took place on the Intrepid aircraft carrier in New York Harbor.

Lauer's performance as moderator was widely panned on Twitter by fellow journalists for not asking the candidates tough enough questions.