Complex sentence: Menard moved to Florida, where he served in the Florida House of Representatives in 1874, and where he was elected as justice of the peace for Duval County in 1874 and again in 1877.
Split into simpler sentences: Menard moved to Florida, where he served in the Florida House of Representatives in 1874. That same year he was he was elected as justice of the peace for Duval County and again in 1877.