Thanks to: Techpolitics
FairVote2020 has developed an interactive map showing voter registration rates in Maryland communities and neighborhoods as of April 2004. Boundaries for the thematic display are based on census block groups.
Zooming in to a scale of about five miles, you will see the estimated number of unregistered persons (by block group) displayed in purple boxes.
You can view socioeconomic themes -- race, ethnicity, income, access to vehicles, etc. -- for these neighborhood areas by selecting maps from the drop-down menu under "Compare Maps" on the left. These maps also show block group-level detail, providing an exact boundary match to the voter registration data.
Below the links to the interactive maps is a link to a directory with about 950 maps in Adobe format -- printer-ready and PDA compatible. These maps show street-level detail for areas where 40% or more of the voting age population is minority, with an estimated 200 or more unregistered or inactive voters. There are an estimated 500,000 unregistered or inactive voters (all races) in the 950 focus areas, representing nearly 44% of the resident voting age population. About 58% of Maryland's minority population lives in these areas.
There is also a link to Adobe maps showing neighborhood registration rates for all Maryland localities with populations greater than 15,000.
( neighborhood-level block groups as proxy precincts)Google-FairData Base Map (start with a Google map interface)
Map 1 (default map) -- Unregistered or Inactive Voting Age Population in 2004
At a scale of about 5 miles, the estimated number of voting age persons (by block group) who are not registered is displayed in purple boxes. When you click on ZOOM TO and then click on the map -- voter registration and demographic data for the block group selected will appear in a table below the map. Click on INFO and then click on the map for more detailed data.
At a scale of about 10 miles, precinct lines based on the new 2002 precinct boundaries can be activated by checking the "2002 VTDs (MD) "box below the map image. Click on INFO and then click on the map for a pop-up window displaying the precinct name. Remove the check mark on the box labeled "_Block Group" to display just the precinct lines on the map.
This map is based on an April 2004 statewide registered voter file with 3 million names. Approximately 98% of the addresses are geocoded. For the map theme, we have eliminated from the registered count anyone who was identified as inactive. This reduces the statewide active registered voter count to about 2.8 million persons -Blank areas on the map depict areas where the geocoding or voter data was faulty.
Sources: Census 2000, Maryland Secretary of State
For use with the block level Adobe maps (see below), at a scale of about 5 miles, green labels showing the block group numbers are displayed by checking the box next to "BG FIPS code" below the map image. (The five digit state-county portion of the number, e.g. "24510" is not shown in the map -- 24 is for Maryland and 510 indicates Baltimore City -- but is displayed using the INFO button and must be entered for searches based on the block group code using FIND. )
Maps 2 thru 17 -- Block-Group Socio-Economic Detail Maps
See SocioEcon mapper for map details.
Sources: Census 2000 Summary File 1 (SF 1) 100-Percent Data and SF 3 Sample Data
Note: Precinct boundaries cannot be displayed in Maps 2 thru 17
Map 18 -- Statewide Focus Areas
See also Adobe maps below. This map shows block group areas with populations that are 40% or more minority, according to the 2000 census, with 200 or more estimated unregistered or inactive voters.
Street-level printer-ready, PDA compatible detail maps can be downloaded by clicking on the INFO button and then on the precinct of interest. Next select "Focus Areas" and select the Adobe map link from the lower half of the pop-up window. Right click and select Save Target As or Open in New Window).
Batch downloads for the Adobe files (organized by county, 2004 precinct proxy code, city, zip, and block group, number) can be accessed via this directory:
Click here for a map-linked spreadsheet bridging between the Adobe maps and the interactive map (with built-in sorting features) -- also located at the top of the above directory. Try Democracy South's Greensboro, NC tutorial,, but note that in Maryland there is no information on the race or ethnicity of the voter.
Map 19 -- Bush-Gore by County (Head-to-Head Contest) Note that congressional lines are for the 109th congress ( 2005-2006), not the historical 2000 boundaries.
Map 20 -- Bush-Kerry by County (Head-to-Head Contest)
At a scale of about 200 miles, green labels show votes cast for the two major party candidates by county.
This map does not display election returns below the county level.
Source: Dave Leip's Atlas of US Presidential Elections, 12/03/04.
Map 21 -- Party Affiliation (State Senate) 2007
Map 22 -- Party Affiliation (State House) 2007
Map 23 -- Party Affiliation (Congress) 2007
These maps are set to print at 11" by 17" but will print to smaller or larger page sizes.
Click on the links below to see the index of maps, then click on the file name. It will take a few moments for the file to load into the Acrobat reader, depending upon the speed of your internet connection. To save and then view a map file (the best method for accessing these files), right click on the file name, then choose 'Save Target As' (Internet Explorer) or 'Save Link As' (Netscape). Files range from 50k to 500k in size.
These street-level maps show neighborhoods and communities with populations that are 40% or more minority, according to the 2000 census, with 200 or more estimated unregistered or inactive voters.
White numbers overlaying dots show estimated unregistered or inactive voters (all races) by census block. These dots are color-coded to show race/ethnicity components for the over 18 population residing in the census block and scaled based on the total number of estimated unregistered voters.
Census blocks shaded in grey have minority voting age populations below 40%.
The files are organized by county, 2004 precinct proxy code, city, zip, and block group number. The precinct proxy code is based on a precinct that is within all or part of the block group. Where block groups are split by precincts, only one of the precincts is identified. Precinct proxies may also encompass more than one block group.
Click here for a map-linked spreadsheet bridging between the Adobe maps and the interactive map (with built-in sorting features) -- also located at the top of the above directory. Try the Greensboro, NC tutorial developed with our client Democracy South, but note that in Maryland there is no information on the race or ethnicity of the voter.
There are an estimated 500,000 unregistered or inactive voters (all races) in the 950 focus areas, representing nearly 44% of the resident voting age population. There are focus areas in 19 of the state's 22 counties. About 58% of Maryland's minority population lives in these areas.
- Maryland localities with populations over 15,000 (80)
Birds-eye view of unregistered/inactive voter rates. These maps can be used for orientation purposes with the "focus area" block-level maps above. The numbers displayed in purple boxes show unregistered or inactive voters and will match the unregistered voter count in the footer portion of the block-level "focus area" maps.
See also: map-linked spreadsheet