Interesting read. The reverse happened the same year in Rhode Island with the election of John Chaffee, breaking the streak of Democratic governors. (Del Sesto served one term in the late 50's, but lost after 2 years)
A couple months ago I was interested in Vermont governors and came across something I had never heard of before, the "Mountain Rule". It was a really interesting read; governors, US Senators, and Representatives served a term depending on what side of the mountain they resided on.
http://vermonthistory.org/journal/71/vt713_401.pdf