 Biden and Trump reached a final deal on the format, timing and rules of the debate, which includes no audience, no notes, no help from aides and muting of microphones in some instances. The 90 minute debate is the first of two set for the election cycle and will also be the first time either candidate has taken place in a debate since their last time on stage together in 2020. Biden was unchallenged in the Democratic primary race and Trump declined to participate in debates with other candidates for the GOP nomination.