In the absence of active precincts, the district has become the default hub of the local Republican Party. The 40 districts correspond exactly with the 40 State House Districts throughout the State. It is the District that is responsible for organizing local party elections every two years in the 1-2 months leading up to the State Convention.
It is important to note however that Districts very widely in their level of activity. Some districts will be very active, while others will be struggling, and some districts do not even have a single Republican volunteer who is willing to lead the District (this usually pertains only to the most rural House Districts).