The vice presidential debate between Gov. Tim Walz (D-MN) and Sen. J.D. Vance (R-OH) is being moderated by CBS Evening News anchor Norah O’Donnell and Face the Nation host Margaret Brennan.

Moderators have the potential to make or break a debate, often becoming active participants. This was the case in the first presidential debate between former President Donald Trump and Vice President Kamala Harris when the moderators drew outrage for continually fact-checking the former while failing to do so with the latter.