Kamala Harris gains lead in presidential odds after post-debate polls

Vice President Kamala Harris made slight gains or remained stable in the betting odds for the 2024 presidential election.

This action, which is not legally permitted for U.S. bookmakers, remained in Harris’ favor after the first debate of the race between the vice president and former President Donald Trump.

Post-debate polls reflect Harris’ narrow lead in the betting market. A post-debate USA TODAY/Suffolk University poll showed Harris ahead 49% to 46% in the crucial swing state of Pennsylvania.

Harris extended her lead at the three offshore betting sites USA TODAY regularly examines, staying at -125 (even winnings) at British bookmaker Bet365.

The change of course to the Democrats came after Trump gave up the possibility of further debates against Harris following the decisive defeat in Philadelphia.

Presidential Election Betting Odds Timeline

Betting odds for the presidential elections, as of September 23rd.

Bet 365

• Kamala Harris: -125

• Donald Trump: EVEN

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Bovada

• Kamala Harris: -130

• Donald Trump: +110

BetOnline

• Kamala Harris: -130

• Donald Trump: +110

Odds checker

• Kamala Harris: -114

• Donald Trump: +122

How does this election campaign compare to previous elections?

50 and 75 days before the election, Harris had the narrowest lead over Trump of any recent Democratic candidate.

Harris was at -110 after 50 days at British bookmaker Betfair Exchange compared to Trump’s +116. Biden was at -116 after 50 days in 2020, but Trump had better odds at +132.

The odds after 50 days in the last three elections were:

2024

• Harris: -110

• Trump: +116

2020

2016

• Clinton: -182

• Trump: +210

Harris’ lead was smaller than that of previous Democratic challengers 75 days before the election. Then-Secretary of State Hillary Clinton had a large lead of -323 to +370 over Trump at Betfair. Trump won the race in 2016 but lost the majority of the vote, marking the second time an outsider has won the White House.

The odds for the last three elections after 75 days were:

2024

• Harris: -102

• Trump: +110

2020

2016

• Clinton: -323

• Trump: +370

This article originally appeared on USA TODAY: Kamala Harris’ presidential lead grows after post-debate polls