The Danbury Board of Education has unanimously voted for a Democrat to fill a vacancy on the Board.  Brigid Guertin, the city’s historian and the executive director of the Danbury Museum and Historical Society, will serve the nearly 2 years remaining of the four year term.  She steps in for Democrat Joe Britton, who resigned last month after being elected to the Danbury City Council.  Guertin and her husband, Police Lt Gary Guertin, have three sons in the Danbury School District.  She was voted to the role out of 4 candidates interviewed by the Board of Ed.