Alfred M. Landon, Nancy Landon Kassebaum Baker, Frank Carlson, James B. Pearson were all on the left, Dole to a lesser extent. KS has not elected a Democrat since c. 1934, if I am not mistaken, but they like those Democrat governors.
Governor, Lieutenant Governor were held by Dems Kathleen Sebelius and Mark Parkinson respectively from January 13, 2003 – April 28, 2009. The offices of Governor, Lieutenant Governor, Secretary of State, Attorney General, and Treasurer were in democrat hands in April 2009 until Jan 2011. So it has only been purely republican since 2011.
Where did you find that list of names? I didn't see it in the article.