One fact sets Elizabeth “Liz” Johnson, candidate for Georgia insurance commissioner, apart from all other statewide candidates in this year’s elections. She lives in Bulloch County.Johnson, 60, has run for several other offices at a county and district level. But more clearly than her past bids for probate judge and court clerk, the office she is now seeking tracks with the 40 years she spent working in insurance.She is vying with Keith G. Heard, 57, of Athens, for the Democratic nomination in the May 20 primary.