Dick Lugar our senator from Indiana fits that description. He's a good man at heart but been in DC far too long - 34 years.
34 years is WAY too long.
One thing about growing up in a small (population) state and being politically active is that you don't only get acquainted with your own politicians-- I met every governor-- but you also get acquainted with those from neighboring states.
For instance, I met Walter Mondale. Hopeless liberal, but one of the most congenial, nicest guys you'd ever meet. He had that self-depreciating, dry midwest sense of humor. Following his 49 state loss to Reagan, he got nominated for the fill-in when the incumbent lost his life in a plane crash days before the election. After his loss there, he remarked that he made history as the first Democrat to lose elections in all 50 states.
At the other end, you have Alan Simpson of Wyoming, very impressive conservative when he first came up. Solid, articulate and connected well to the college crowd, which I was when I first met him at a conservative student's gathering. He was also the guy who ended Gale McGee's career. Washington changed him, far worse than it did Orrin. The best thing I can say about him now is that he is not always a useful idiot for the left.