President Donald Trump and former Vice President Joe Biden participate in the first presidential debate on Sept. 29. The Debate Commission has established new rules for Thursday’s debate, including plans to mute a candidate’s mic when the other is giving an opening statement.

CLEVELAND, OHIO – SEPTEMBER 29: U.S. President Donald Trump (R) and former Vice President Democratic presidential nominee Joe Biden participate in the first presidential debate at the Health Education Campus of Case Western Reserve University on September 29, 2020 in Cleveland, Ohio. This is the first of three planned debates between the two candidates in the lead up to the election on November 3. (Photo by Olivier Douliery-Pool/Getty Images)