Rep. Thomas Massie entered the week as the clear frontrunner in his Kentucky Republican primary. But today, his lead on Kalshi has nearly evaporated.

Massie now holds a slim 53% edge on the market for the KY-04 Republican nomination, down 14 points over the past week, while challenger Ed Gallrein has climbed to 49%, making it effectively a coin flip on the market heading into the May 19 primary.

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Two factors appear to be driving the market movement. A new Quantus Insights poll has flipped the race in Gallrein's favor, and a hush money accusation leveled at Massie by his ex-girlfriend has added further turbulence in the final days before the election.

The poll numbers

The non-profit Politix Plus shows that the latest Quantus Insights poll gives Gallrein the lead over Massie at 53% to 45%. This is the first time Gallrein has led in the polls.

Massie's hush money accusation

Meanwhile, Newsweek reported that Massie's ex-girlfriend Cynthia West accused Massie of offering her a hush money payment to prevent her from speaking against one of his Capitol Hill allies.

West is a former congressional aide for Rep. Victoria Spartz of Indiana who is running for a school board seat in Florida. The two later began a romantic relationship after Massie helped her secure a congressional aide position. West says she broke up with Massie after he exhibited behavior she "wasn't comfortable" with at the time.

Sometime later, West lost her congressional aide job and planned to file a wrongful termination complaint against Spartz. She accused the Indiana representative of creating a toxic work environment. West claims Massie offered her $5,000 if she agreed not to file the complaint against Spartz, which she declined.

Massie denied the allegations saying in a statement, "It's sad that a week before this election, people are making false and unsubstantiated allegations about me in an obvious attempt to influence the outcome of this election."

General Election

Regardless of who emerges from the primary, the general election picture looks strongly Republican. Kalshi's KY-04 House market currently prices the Republican party at 95.5% to win the seat in November, suggesting that whoever wins next week's primary will likely be heavily favored heading into the fall.

The takeaway:

Kalshi markets now predict:

  • Rep. Thomas Massie winning the Republican primary: 53%

  • Ed Gallrein winning the Republican primary: 49%

  • GOP to win KY-04 in November: 95.5%

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