MADISON (WKOW) -- Russ Feingold is transitioning into his new life as a private citizen after spending half his life as a Wisconsin or U.S. senator.
Feingold is preparing to teach a law class at Marquette University in the spring. As of now, he says he has no immediate plans to run for office again, although he's keeping the option open.
Feingold ran for his fourth term in the U.S. Senate last year but lost to his opponent Republican Ron Johnson.
Feingold says he didn't underestimate Johnson in the election. He says voters were more concerned with taking out their frustrations on incumbents than they were with studying the candidates.
Feingold says he's not planning to run for Sen. Herb Kohl's seat if he decides not to run for a fifth term, and he will not challenge President Barack Obama either.