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Reapportionment and Redistricting

Reapportionment and Redistricting. Reapportionment. Determining the number of seats each state gets as a result of the Census; moving seats from states losing/gaining population slowly to states gaining population rapidly Reapportionment is conducted using the “method of equal proportions”

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Reapportionment and Redistricting

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  1. ReapportionmentandRedistricting

  2. Reapportionment • Determining the number of seats each state gets as a result of the Census; moving seats from states losing/gaining population slowly to states gaining population rapidly • Reapportionment is conducted using the “method of equal proportions” • http://www.census.gov/population/www/censusdata/apportionment/index.html

  3. Redistricting • Once a state’s number of seats has been determined, the district lines must be redrawn within the state so that each district has almost exactly equal population. • In most states, this is controlled by the state legislature and is a highly partisan process.

  4. 1970’s South Carolina

  5. 1980’s South Carolina

  6. 1990’s South Carolina

  7. 2000’s South Carolina

  8. 2010’s South Carolina

  9. Your turn! • http://gardow.com/davebradlee/redistricting/launchapp.html • Launch Dave’s Redistricting 2.2 • Click on <Select State> (upper left-hand corner) and choose South Carolina • Set the number of districts at seven (use the buttons or the slider) • Divide South Carolina into seven districts with population variance of less than 100. (This site doesn’t allow you to split precincts, so exact population equality is extremely difficult if not impossible to achieve.)

  10. The districts must be contiguous, that is, they have to touch at all points – you can’t skip over territory. Note that this uses the election results from the Obama/McCain presidential race, rather than Congressional races. These will be proxies for Democratic and Republican votes for Congress. Produce two different maps, using your choice of any of the following criteria: 1. Maximize the Republican advantage (draw as many Republican-majority districts as possible). 2. Maximize the Democratic advantage (draw as many Democratic-majority districts as possible). 3. Construct as many black-majority population districts as possible. 4. Create four Republican districts and three Democratic districts (which most closely reflects the actual vote distribution in the state). Save the files using your name in the file name (e.g., Jones 1 and Jones 2) and e-mail them to me by 11:00 AM on Friday, January 25.

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