Massachusetts

Redistricting Algorithm

✱Redistricting was done, keep in mind that this state is notoriously hard to programmatically redistrict due to geographical distortion and/or data inconsistency in the census

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

0.37

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

0.22

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

-25.76

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

cannot calculate - Dem. won every district

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

3.28

☞ Dissimilarity Index ⓘ Measurement of minority representation within a district
  • Hispanic: 0.27
  • African American: 0.31
  • East & South Asian: 0.27
  • Native American: 0.13
  • Other: 0.13

FairyMandered Districts Scores

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

0.44

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

0.25

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

3.26

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

cannot calculate - Dem. won every district

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

2.30

☞ Dissimilarity Index ⓘ Measurement of minority representation within a district
  • Hispanic: 0.18
  • African American: 0.48
  • East & South Asian: 0.35
  • Native American: N/A
  • Other: 0.16

Massachusetts Redistricting Laws After 2020 Census

  • Massachusetts Gov. Charlie Baker (R) signed the state's new congressional maps into law on November 22nd, 2021.
  • Gov. Charlie Baker (R) signed the state's new legislative maps into law on November 4th, 2021.
  • Massachusetts has 9 United States representatives and 200 state legislators.
click here to learn more about massachusett's redistricting laws

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