"Which strategy is being used in a partisan gerrymander if a bloc of Republican voters who all live near one another are broken into 4 distinct districts where they make up a minority of voters in each of the districts and Democrats make up the majority?"

Gerrymandering is a political science term that refers to the manipulation of electoral districts in order to give a certain party an advantage over its rivals during elections. Named after Elbridge Gerry, a Massachusetts governor who created an electoral district in the approximate shape of a salamander (thus Gerry-mandering), it is frowned upon because it is considered a form of election manipulation.

One of the strategies followed by gerrymanders is known as "cracking", which refers to a situation where electoral districts are drawn in such a way that the base support of a certain party is split, or "cracked", among several different districts, so they represent a minority in each of them. In this case, the gerrymander has cracked the Republican voters by breaking them into 4 distinct districts where they will be a minority, with the end result of awarding these districts to Democrats.