Variation between betting houses has grown compared to when USA TODAY last surveyed the betting landscape. British bookmaker Bet365 kept its odds where they have been since the aftermath of the debate between Harris and Trump while offshore bookmaker Bovada puts the two in a near tie.

The question entering this week will be if the vice-presidential debate between nominees Ohio Sen. J.D. Vance and Minnesota Gov. Tim Walz will push the action, which U.S. bookmakers cannot legally partake in, in a similar manner to the Sept. 10 showdown.

Bettors at U.K. bookmaker Betfair exchange put Harris in the favorite position approximately halfway through the debate.