FRANKFORT, Ky. (AP) - Louisville businessman Matt Bevin has filed the necessary paperwork to challenge Senate Republican Leader Mitch McConnell in Kentucky's GOP primary next May.
Bevin delivered his candidacy papers to the secretary of state's office on Friday.
Bevin, making his first political run, is taking on a Republican powerhouse in McConnell, Kentucky's longest-ever serving U.S. senator who is seeking election to a sixth term in office.
The winner of the matchup will likely face Democratic front-runner Alison Lundergan Grimes, Kentucky's incumbent secretary of state, in next fall's general election.
McConnell and Grimes haven't yet filed candidacy papers, but they are actively campaigning and fundraising.
McConnell has collected $17.7 million for his campaign. Grimes has raised $2.5 million. Bevin has received $222,000 in contributions and loaned his campaign $600,000.