My dad was a city councilman in Kansas City in the 70s. He only served one term. He ran again but was voted out.
I don't think he regretted losing that much. It was a really intense job and it took an obvious toll on him. The hours were long, the pay was relatively low and the burden of some of the decisions he had to make really weighed on him. We were all glad when he went back to private practice.