President Joe Biden and former President Donald Trump are expected to spar over economics as they outline their starkly contrasting policy visions for the country during the first presidential debate.

The Thursday showdown, the first of two scheduled so far, will feature Biden and Trump squaring off and will be moderated by CNN. The debate itself has ground rules that deviate from previous election cycles. For instance, there will be no in-person audience, and the candidates’ microphones will only be turned on when it is their turn to speak.