Sen. Rob Portman (R-OH) announced on Monday that he will not seek reelection when his term ends in January 2023, ending more than 30 years in public office.
Portman said the current "partisan gridlock" in the nation was a primary reason for the decision.
"Our country's polarized right now," said Portman during a press conference. "It's kind of shirts and skins. That makes it more difficult to find that common ground. Elected officials aren't rewarded for that. What they're rewarded for is throwing red meat to the talk show."
The senator also said he will be spending the rest of his time in office "on legislation and the challenges our country faces rather than on fundraising and campaigning."
"I am really looking forward to being home in Ohio full-time, seeing family and friends more, and getting back to the private sector, including being able to be more involved in the community and in our family business," added the senator. "And I will always be involved in public policy issues."
Portman came to Washington, D.C., in 1989 under George H.W. Bush, with whom he had a close relationship. He was then elected in the House before serving in the White House with George W. Bush in 2005. He was elected to the Senate in 2010.
Potential Republican candidates that might run for his seat in the next election include Ohio Rep. Jim Jordan, Ohio GOP Chairwoman Jane Timken, former state treasurer Josh Mandel, and "Hillbilly Elegy" author J.D. Vance.