Acomponent of the temporary party organization, these meetings take place during the spring of an election year and involve selecting delegates to the county convention.

precinct conventions              

Explanation:

Precinct conventions are the lowest level of temporary party organization, where the voters of a place meets on every even number years in the month of March and they adopt new resolutions and rule and also appoints delegates to the county conventions or the district conventions.

The precinct delegates meets at the county conventions and it elects delegates to the state conventions.

Hence the answer is --  precinct conventions    

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