Arkansas has been holding presidential primaries since 1976. They had always been in May (except in 1988, when they were in March), but in 2005 the legislature moved the presidential primary from May to February. Now many in the state are wishing they had kept it in May, since the state’s February primary this year attracted almost no attention. Representative Nathan George, a Democrat, says he will introduce a bill next year to move presidential primaries back to May. See this story.
Arkansas Democrats held a March caucus in 1984 for allocating delegates to the Democratic National Convention. See this story.