Virginia

Redistricting Algorithm

Current Congressional Districts

FairyMandered Districts

Demographic Distribution For Current Congressional Districts

FYI: % Based on Registered Voter

Demographic Distribution For FairyMandered Districts




FYI: % Based on Registered Voter


Fairness Metrics


Current Congressional Districts Scores

☞ Reock Score Measurement of compactness for each district that ranges from 0 to 1

0.38

☞ Polsby Popper Measurement of compactness between a district's area and the square of its perimeter

0.26

☞ Efficiency Gap Measurement of competitiveness where wasted votes in an election quantify the degree of partisanship

4.08

☞ Lopsided Margin Measurement which calculates difference between the average percentages by which each part won in a district

5.93

☞ Mean-Median Difference between the median and mean vote-share across all districts for one party

1.90

☞ Dissimilarity Index Measurement of minority representation within a district
  • Hispanic: 0.33
  • African American: 0.31
  • East & South Asian: 0.38
  • Native American: 0.14
  • Other: 0.15

FairyMandered Districts Scores

☞ Reock Score Measurement of compactness for each district that ranges from 0 to 1

0.43

☞ Polsby Popper Measurement of compactness between a district's area and the square of its perimeter

0.23

☞ Efficiency Gap Measurement of competitiveness where wasted votes in an election quantify the degree of partisanship

-14.77

☞ Lopsided Margin Measurement which calculates difference between the average percentages by which each part won in a district

13.74

☞ Mean-Median Difference between the median and mean vote-share across all districts for one party

0.20

☞ Dissimilarity Index Measurement of minority representation within a district
  • Hispanic: 0.31
  • African American: 0.31
  • East & South Asian: 0.47
  • Native American: N/A
  • Other: 0.44

Virginia Redistricting Laws After 2020 Census


  • Virginia Supreme Court unanimously approved congressional maps for the state on December 28th, 2021.
  • The Virginia Supreme Court unanimously approved district maps for the Virginia House of Delegates and Virginia State Senate on December 28th, 2021.
  • Virginia has 11 United States representatives and 140 state legislators.

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