Answer:
I believe it is the last one: "That the subjects ... may have arms for their defence"
The separation of powers, that created the three branches of government
A precinct captain is the main person who handles the job to organize the member of different parties during any of the campaigns.
In addition to this, they also encourage the voters to carry forwards the task in the right direction as per the voting schedule.
This allows them to carry forwards the election day in peace.
