Sebelius's tenure as insurance commissioner in Kansas seems to have been both successful and fairly quiet: She is not defined by the battles and struggles of that period. She was not at the center of any tremendously controversial initiatives. Rather, she seems to have been a politically skillful and administratively competent commissioner. In 2001, Governing magazine named her one of the top public officials in the country and gave a nice summary of her approach to the office. You can read it here.