Getting Started
While we often focus on the borders between countries, the internal boundaries that divide states, provinces, and cities are just as critical in shaping political power. These lines determine who represents a community and whose voices are heard in government. This chapter explores how the drawing of these internal boundaries, specifically for voting, can be a neutral administrative task or a powerful political weapon that directly influences election results.
What You Should Be able to Do
Explain the purpose of voting districts and the process of redistricting.
Define gerrymandering and describe its primary forms.
Analyze how the shape and composition of a voting district can influence election outcomes.
Evaluate the impact of gerrymandering on political representation and competition at various scales.
Key Developments & Analysis
Pattern: The Shape of Political Power
The spatial arrangement of voting districts on a map reveals much about the political processes that created them. While some districts are compact and follow clear geographic or municipal lines, others display highly irregular patterns that suggest political manipulation.
Irregular and Non-Compact Shapes: Districts may appear as long, thin tendrils, bizarre "splotches," or other contorted shapes. These forms often result from efforts to connect or divide specific populations that are not geographically contiguous.
Splitting of Communities: A common pattern is the division of a single city, county, or cohesive neighborhood into multiple different voting districts. This prevents the community from voting as a unified bloc.
Spatial Concentration and Dispersion: Maps may show districts where one political party's voters are highly concentrated ("packed") or districts where an opposing party's voters are thinly spread across many areas ("cracked").
Process: Drawing the Lines
These distinct spatial patterns are not accidental; they are the result of the process used to draw internal boundaries. The key process is redistricting, which can be manipulated to create a political advantage.
Redistricting is the process of redrawing legislative district boundaries every 10 years after a census. The primary goal is to ensure that each district has a roughly equal population, upholding the principle of "one person, one vote." This task is typically carried out by state legislatures or, in some cases, by independent commissions.
Gerrymandering is the deliberate manipulation of redistricting to engineer a specific electoral outcome that benefits a particular political party or group. The name comes from an 1812 salamander-shaped district in Massachusetts signed into law by Governor Elbridge Gerry. The two main techniques are:
Cracking: This method involves splitting a concentration of a particular voting group (e.g., supporters of an opposing party) among several districts. By dividing their numbers, this strategy ensures the group does not have a voting majority in any single district, thus diluting their political power.
Packing: This method involves concentrating a particular voting group into as few districts as possible. This creates "super-safe" districts for the opposition, but it "wastes" their votes by giving them a massive victory in one area while preventing them from being competitive in surrounding districts.
Impacts: Spatial and Political Outcomes
The process of gerrymandering creates significant and lasting effects on the political landscape.
Immediate Spatial Outcomes: The most direct result is the creation of non-competitive or "safe" districts, where one party is virtually guaranteed to win. This can lead to the election of officials who are more politically extreme, as they do not need to appeal to a broad base of voters. It also spatially separates voters into politically homogenous districts, reducing cross-party interaction.
Longer-Term Spatial Reorganization: Over time, gerrymandering contributes to increased political polarization and gridlock at state and national scales. When representatives do not fear losing an election to the other party, they have little incentive to compromise. This can also lead to voter apathy and disenfranchisement, as people in "cracked" or "packed" districts may feel their vote does not matter.
Data & Organization Tools
The Redistricting Process Sequence
The creation of new voting districts follows a predictable sequence, typically tied to the national census. Gerrymandering is the political manipulation of Step 3.
| Step | Action | Description |
|---|---|---|
| 1 | Census | The government conducts a complete population count. |
| 2 | Apportionment | The total number of representative seats is divided among states based on their new population totals. |
| 3 | Redistricting | State legislatures or commissions draw the new boundaries for each voting district. |
| 4 | Elections | The newly drawn districts are used in subsequent elections until the next census. |
Evidence Bank
Voting District: A geographically defined area from which a representative is elected to a legislative body. It is the fundamental internal boundary for political representation.
Census: An official count of a population, constitutionally required in the United States every ten years to provide data for apportionment and redistricting.
Reapportionment: The process of reallocating the number of seats in a legislative body (e.g., the U.S. House of Representatives) among states based on population changes.
Redistricting: The redrawing of boundaries for electoral districts to reflect population changes and ensure equal representation.
Gerrymandering: The practice of drawing electoral district boundaries to give an unfair political advantage to a party, group, or incumbent.
Packing: A gerrymandering technique that concentrates voters from an opposing group into a single district to reduce their influence in other districts.
Cracking: A gerrymandering technique that spreads voters from an opposing group across many districts to deny them a voting majority in any single district.
Majority-Minority District: A district in which a racial or ethnic minority group comprises a majority of the population. These can be created to prevent vote dilution but are sometimes challenged as a form of racial gerrymandering.
Independent Redistricting Commission: A body, separate from the state legislature, tasked with drawing electoral maps to promote fairness and reduce partisan influence.
Skill Snapshots
Pattern–Process:
Pattern: A district where one party consistently wins with over 85% of the vote. Process: This is likely the result of "packing," where opposition voters are concentrated to concede one district while making surrounding districts less competitive for them.
Pattern: A cohesive urban neighborhood is split into three different congressional districts, each stretching into suburbs. Process: This reflects "cracking," where a community's voting power is diluted by dividing it among multiple districts dominated by other voter groups.
Pattern: A state's congressional delegation does not reflect the statewide popular vote (e.g., 55% of votes for Party A, but Party B wins 70% of the seats). Process: This mismatch is a classic indicator of effective partisan gerrymandering that has created an electoral map favoring one party.
Scale:
Local vs. National: A gerrymandered city council district can determine control over local zoning and school funding, while a gerrymandered congressional district can influence national policy and control of the U.S. House of Representatives.
State vs. Federal: A state legislature can gerrymander its own districts to maintain its power, and it can also gerrymander the state's U.S. congressional districts, impacting federal representation.
Individual vs. District: At the individual scale, a voter's home address places them within a district. At the district scale, the collective political power of thousands of individuals is aggregated, and its influence is shaped by the district's boundaries.
Common Misconceptions & Clarifications
"Redistricting is the same as gerrymandering." Clarification: Redistricting is the necessary and neutral process of redrawing maps to reflect population changes. Gerrymandering is the intentional manipulation of that process for political gain.
"All strangely shaped districts are gerrymandered." Clarification: While odd shapes are a red flag, some are created to follow natural features like rivers or to keep existing political units (like counties) intact. The key factor in gerrymandering is the political intent behind the shape.
"Gerrymandering is always illegal." Clarification: This is complex. In the U.S., drawing districts to intentionally dilute the vote of racial minorities is illegal. However, the legality of drawing districts for purely partisan advantage has been a debated and often permitted practice.
"Gerrymandering only affects the U.S. Congress." Clarification: The process affects elections at all scales, including state legislatures, county commissions, city councils, and even local school boards.
One-Paragraph Summary
Internal boundaries, particularly voting districts, are fundamental structures that organize political representation within a state. The required process of redistricting after each census ensures population equality but also presents an opportunity for political manipulation through gerrymandering. By using spatial techniques like "packing" and "cracking," one political party can draw district maps that give it an unfair advantage, often leading to non-competitive elections, increased polarization, and a disconnect between a state's overall political leaning and its elected representatives. Understanding how these lines are drawn is therefore essential to analyzing the geography of political power and the fairness of democratic systems at every scale.