Which type of gerrymandering is designed to elect minority candidates?

Stacked

Explanation:

Stacked gerrymandering is designed to elect minority candidates

Gerrymandering is described as an act of creating an unjust political favourable condition for a certain party of group by manipulating district boundaries.

Two types of tactics that are used in Gerrymandering are:

1) cracking

2) packing

Stacked Gerrymandering

Explanation:

The Stacked Gerrymandering occurs when there is a grouping of low-income, less educated minorities with more-educated voters who come to vote. This is to create perceived voting majority.

So, this type of geerymandering, it's called stacked geerymandering because it favours minority candidates.