MADISON, Wis. (AP) — Tommy Thompson, who was elected four times as Wisconsin governor and is wrapping up a sting as interim University of Wisconsin System president, said Tuesday that he’s not ruling out another run for governor.

The 80-year-old Republican told WISN-TV that “everything is on the table.”

“I’m not saying it’s in the cards,” Thompson told WISN. “But, I’m physically and mentally capable of doing anything.”

Thompson said he would discuss his future with his family in April. He is resigning as interim UW president on March 18.

Former Lt. Gov. Rebecca Kleefisch is the highest profile Republican currently running for governor. Former U.S. Senate candidates Eric Hovde and Kevin Nicholson are both also considering running.

Kleefisch reported raising $3.3 million in the four months after she launched her campaign. Democratic Gov. Tony Evers said he raised $10 million last year for his reelection bid.

Thompson served as governor from 1987 to 2001 when he left midterm to serve as U.S. Health and Human Services secretary. He briefly ran for president in 2007 and last ran for public office in 2012, losing the U.S. Senate race to Democratic Sen. Tammy Baldwin.

The primary for governor is Aug. 9.