Stop the spread of slavery in the western territories
Explanation:
The Republican Party form with the ideas of abolishing slavery. The party founded in 1854 with the main goal to stop the spread of slavery in the western territories. The Kansas-Nebraska Act led to the formation of the Republican Party, which committed itself to end the further expansion of slavery.
Municipal and County level sherrifs have always been elected by the population of either the city or county population by direct popular vote. Today most sherrifs are still elected officials.