Republicans Andy Barr, Daniel Cameron and Nate Morris are facing off in the Republican primary.
There is much speculation on social media about what the announcement could be.
The Louisville native portrays himself as an independent Democrat willing to cut through "partisan nonsense” and tackle trade, health care and immigration.
The seat has long been held by Republican Sen. Mitch McConnell, who is not seeking reelection in 2026.
Vance, who was born in Ohio, would visit family in Breathitt County during his summers as a child.
House Bill 153 became law without Gov. Andy Beshear's signature.
House Bill 153 passed the committee on a 7-2 vote Thursday.
The FBI and Capitol Hill police are conducting the investigation, according to Politico, which first reported the news.
The Democratic congressman from Louisville said he is willing to compromise on a smaller plan as long as it helps improve the country's infrastructure.
Paul says he does not believe the man eyeing his position will win support throughout Kentucky.