Final answer:
The textbook mentions partisan, incumbent, and racial as types of gerrymandering, which involve manipulating district boundaries to favor certain political parties, protect incumbents, or affect the voting power of racial groups, respectively.
Step-by-step explanation:
According to the textbook, the types of gerrymandering that are mentioned include partisan, incumbent, and racial. Partisan gerrymandering refers to the manipulation of electoral district boundaries to favor a particular political party. Incumbent gerrymandering, often described as sweetheart gerrymandering, involves creating districts that protect existing officeholders, usually by making their districts safe and non-competitive. Racial gerrymandering is the drawing of districts to dilute or concentrate the voting power of racial or ethnic groups and can be challenged under the Voting Rights Act. Gender-based and geographic gerrymandering are not mentioned as types in the provided references.