Evaluating
Redistricting Online
Take Home Assignment 3
Goals: deeper understanding of such topics as the geography of urban
ethnicity, poverty, and governance; learning some of statistical and cartographic
resources available online; map interpretation skills and analytical writing.
1. Open the following web site:
http://bcs.whfreeman.com/jordan9e/cat_060/ch06/index.htm
2. Follow the instructions (they are also copied below for convenience,
but it is easier to understand them online). A general explanation of
how to read the tutorial is provided here: http://bcs.whfreeman.com/jordan9e/cat_060/Directions.htm
3. Complete all the 18 steps.
4. Submit by the deadline the following:
a. answers to all eleven questions (1 point each; about 1-2 pages
total; please type; put your name);
b. print out of the two maps, Steps 12 (Percent 65 and over by block
group) and 17 (Per Capita Income 1989: 1990). Make sure that they are
at the suggested zoom level (6). Put your name and staple. If you print
out not the whole .html page, but just the image, add a title. If you
have no access to printer, contact the instructor regarding electronic submission
of the map images. Each map is worth 2 points.
6.2 Evaluating Redistricting Online
Updated May 18, 2004
Another aspect of political geography in which mapping plays a primary role
is redistricting. Redistricting is the process of creating new electoral district
boundaries, which in turn creates new electoral regions.
As you have learned in class, new electoral district boundaries may be illegally
manipulated or gerrymandered to favor certain sectors of society, such as
political parties, ethnic groups, or age groups.
According to U.S. law, all states and counties with more than one electoral
district must redistrict every ten years, to reflect new population figures
released by the U.S. Census. Finding a way to redistrict so as to represent
every citizen fairly, without gerrymandering, is a complex task of analyzing
the geography of race, age, and political persuasion in a given district.
In this exercise we will analyze electoral redistricting in Hillsborough
County, Florida, and compare the redistricting maps to the demographic characteristics
of the county.
Step 1 The home page of the Hillsborough
County Commission Redistricting Page at www.hillsboroughcounty.org/bocc/redistricting/home.html
should be open in the left side of your browser.
You should see a gateway to the Web site. This Web site describes the redistricting
process that Hillsborough County underwent in 2001 for the reapportionment
of its County Commission.
Step 2 Scroll down and click
on the link “Criteria for Redistricting of County Commission.”
Question 1: Briefly summarize the main criteria
that Hillsborough County considered in its redistricting process.
Step 3 Press the Back button
to return to the previous Web page. As you scroll down the page, you will
see the sections where the committee has posted the various maps or “plans”
of new district boundaries submitted for consideration. They can be downloaded
and opened as PDF files using Adobe Acrobat.
Three of these plans, with their corresponding population data tables, appear
on page 77 of Exploring Human Geography with Maps. In the maps, the old district
boundaries are depicted as red and white lines, and the proposed new districts
are depicted as shaded areas of different colors.
Question 2: Compare the old district boundaries
in each of the three maps, B, D, and G. Which district is the most compact?
What geographical factors (physical or human) might have influenced the shape
of this district?
Question 3: Which of the former electoral districts is the least
compact? What geographical factors might have influenced this shape?
Question 4: Compare the shapes of the proposed district boundaries
in each of the three maps. Which of the three plans shows the greatest compactness?
Question 5: Evaluate the data on race in the tables to the right
of the maps. Is there one plan that particularly favors the Hispanic vote?
Why or why not?
Question 6: How would you evaluate the plans in terms of the African–
American vote?
Next, let’s see if we can learn more about the districts by comparing the
proposed district plans to census data.
Step 4 Leave the Hillsborough
County site and go to the home page of the U.S. Census, www.census.gov, as
you did in chapter 5.
Step 5 From the main page,
click on American FactFinder in the left column. From the Factfinder page,
click on “Maps and Geography” in the left column, then choose “Thematic Maps”
from the maps page.
This launches the interactive map application of FactFinder.
Step 6 From the blue links
across the tope of the page, click on “Geography.”
Step 7 From the next window,
change “Select a Geographic Type” to “County,” change “Select a State” to
“Florida,” and change “Select a Geographic Area” to “Hillsborough County.”
Step 8 Click
“Show Result.”
You should now have a map view showing “Persons per Square Mile” in Hillsborough
County.
You already have information about race for each of the districts. Are there
other socioeconomic factors that might be considered in the districts? Below,
we will explore two other demographic variables, age and income, to see if
there is a correlation.
Step 9 From the blue links
across the top of the page, click on “Themes.”
Step 10 From the list of
available themes, scroll down and select “Percent of Persons 65 Years and
Over: 2000,” and click “Show Result.”
Step 11 From the Zoom options
to the right of the map, click on button 6 to zoom in one level.
Question 7: What is the enumeration unit of
this map?
Step 12 Because we want
to look at the most detailed information about race that we can, change the
enumeration unit to Block Group.
In U.S. Census data, a block group is one of the smallest enumeration units
available, averaging about 1,500 people in size.
You should now have a view of the redistricting area showing percent 65
and over by block group.
Question 8: Compare the Census map with the
proposed district boundary maps. (Remember that you can use the zoom and pan
tools to explore different regions of the county.) Are there any districts
that appear to favor people over the age of 65? If so, explain.
Step 13 From the blue links
across the top of the page, click on “Data Sets with Thematic Maps.”
Step 14 Select Summary Tape
File 3 and click “Next.”
Step 15 As before, for “Select
a Geographic Type,” choose “County;” for “Select a State,” choose “Florida;”
and for “Select a Geographic Area,” choose “Hillsborough County.”
Step 16 Click “Next.”
Step 17 From the list of
variables, select “Per Capita Income 1989: 1990” and click “Show Result.”
Be patient—this may take a few moments to appear on your monitor.
Question 9: Compare the map of per capita income
to the proposed district boundary plans. Are there any districts that appear
to favor people with higher incomes? Explain your reasoning.
Question 10: Based on what you have observed so far, which of the
three proposed plans do you think appears to be the most equitable redistricting
solution, and why?
Step 18 Return to the Hillsborough
County Commission Redistricting Committee Web page as in Step 1, and click
on the link to the “Adopted Commission District Boundaries Map” (you can use
the lower-resolution map link if you like).
Question 11: Do you think the Committee found
an equitable redistricting solution? Consider in your answer the criteria
that the committee set forth, from Question 1, above.