Biden Exit Upends U.S. Election Betting Odds; Harris Rises, Trump Falls (a Bit)

By Monday morning, Joe Biden, the incumbent president and long the favorite to run again for the Democrats, was off oddsboards entirely.

Geoff Zochodne - Senior News Analyst at Covers.com
Geoff Zochodne • Senior News Analyst
Jul 22, 2024 • 14:46 ET • 2 min read
Joe Biden Kamala Harris
Photo By - USA TODAY Sports

Joe Biden has no regard for closing line value. 

The Democratic President of the United States and the people around him vowed for weeks that Biden would run for another term atop the party’s ticket. Those reassurances came after a debate on June 27 that Biden did poorly in, leading to calls for the 81-year-old to step aside.

But so much for that. On Sunday, Biden shocked the world by announcing he would not accept the Democratic nomination and that he was throwing his “full support and endorsement” behind Vice President Kamala Harris. 

US election betting odds accordingly went haywire as bettors and bookmakers rushed to get in and out of their previous positions. 

While Biden’s odds to win the presidency ballooned following the debate, he was viewed as the most likely Democratic as recently as last Wednesday, when bet365 had the incumbent priced at even money to represent the party in November. The veep, Harris, stood at +110.

But by Monday morning Biden was off the board entirely. Harris, meanwhile, was a -900 favorite at bet365 in Ontario (where election betting is legal) to be the Democratic candidate as of around noon, an implied probability of 90%. Trump's odds lengthened a touch, to -200 to win the election, followed by Harris at +200. 

At PredictIt, a legal predictions market in the U.S., more than six million contracts were bought and sold in its Democratic presidential nominee market on Sunday, the highest volume reported for the past three months. Biden's "yes" price, which once sat at 88 cents per share, has cratered to a penny; Harris' has shot up to 86 cents from a quarter last week.

So anyone who tried to buy low on Biden recently got wiped out. And anyone who sold high on Harris missed out. 

Trump remains atop the board

However, the one constant is that Trump remains the favorite to win in November, although the markets suggest the Republican might have fared better against Biden than Harris. Trump's odds to win the presidential election shortened to -275 at bet365 following the attempt on his life in Pennsylvania earlier this month, before settling at -200 after Biden's withdrawal announcement this weekend.

The tightening for Trump might have to do with the prospect of facing a more youthful candidate in the general election. The Republican Party has already expended considerable time and energy attacking Biden, and all for naught now, perhaps. 

“So, we are forced to spend time and money on fighting Crooked Joe Biden, he polls badly after having a terrible debate, and quits the race,” Trump wrote on the Trump Media & Technology Corp.-owned Truth Social platform on Sunday. “Now we have to start all over again.”

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Geoff Zochodne, Covers Sports Betting Journalist
Senior News Analyst

Geoff has been writing about the legalization and regulation of sports betting in Canada and the United States for more than three years. His work has included coverage of launches in New York, Ohio, and Ontario, numerous court proceedings, and the decriminalization of single-game wagering by Canadian lawmakers. As an expert on the growing online gambling industry in North America, Geoff has appeared on and been cited by publications and networks such as Axios, TSN Radio, and VSiN. Prior to joining Covers, he spent 10 years as a journalist reporting on business and politics, including a stint at the Ontario legislature. More recently, Geoff’s work has focused on the pending launch of a competitive iGaming market in Alberta, the evolution of major companies within the gambling industry, and efforts by U.S. state regulators to rein in offshore activity and college player prop betting.

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