In 2006, a group of conservatives, including an RNC member/lawyer from PA, attempted to save the Blackwell for Governor campaign from itself and the outrage of Ohio voters disgusted with Republican rule in Ohio by challenging the legitimacy of Governor Ted Strickland, and thus, ultimately his eligibility to be sworn into office.
At the time, I said that purely as a matter of law the elections statute's standard for what can constitute as a "residency" was so flexible, that it's a stretch to say there was any legal basis for the complaint.
ProgressOhio has been pushing the State Senator Jon Husted story hard. I've only said that people like Bizzyblog who were so quick with the felony allegations when it was Strickland are showing their partisan nonsense with their utter silence on Husted.