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Racial Redistricting and Minority Representation
Unformatted Document Text:  4 ANALYSIS 19 π BD π W D π R n 1BD n 1W D n 1R n 2BD n 2W D n 2R n 3BD n 3W D n 3R V (D) Util. 1 3 1 75% 0% 25% 0% 76% 24% 0% 44% 56% 75% 0.25 2 3 1 44% 0% 56% 31% 20% 49% 0% 100% 0% 44% 0.32 3 3 1 0% 100% 0% 39% 0% 61% 36% 20% 44% 39% 0.39 4 3 1 0% 100% 0% 38% 0% 62% 37% 20% 43% 38% 0.43 5 3 1 30% 0% 70% 15% 85% 0% 30% 35% 35% 15% 0.48 1 3 2 0% 20% 80% 75% 0% 25% 0% 100% 0% 75% 0.20 2 3 2 75% 0% 25% 0% 37% 63% 0% 83% 17% 75% 0.25 3 3 2 42% 0% 58% 33% 20% 47% 0% 100% 0% 42% 0.30 4 3 2 35% 0% 65% 11% 89% 0% 29% 31% 40% 24% 0.35 5 3 2 30% 0% 70% 19% 81% 0% 26% 39% 35% 11% 0.40 1 3 3 0% 20% 80% 0% 100% 0% 75% 0% 25% 75% 0.17 2 3 3 0% 40% 60% 75% 0% 25% 0% 80% 20% 75% 0.22 3 3 3 15% 1% 85% 30% 61% 9% 30% 58% 12% 15% 0.25 4 3 3 25% 69% 6% 25% 48% 27% 25% 3% 72% 0% 0.31 5 3 3 25% 55% 20% 25% 33% 42% 25% 32% 43% 0% 0.36 1 3 4 0% 45% 55% 75% 25% 0% 0% 50% 50% 75% 0.17 2 3 4 0% 76% 24% 75% 25% 0% 0% 19% 81% 75% 0.22 3 3 4 0% 0% 100% 0% 95% 5% 75% 25% 0% 75% 0.25 4 3 4 39% 61% 0% 36% 59% 5% 0% 0% 100% 39% 0.29 5 3 4 7% 0% 93% 33% 55% 12% 35% 65% 0% 28% 0.33 1 3 5 0% 11% 89% 0% 84% 16% 75% 25% 0% 75% 0.17 2 3 5 0% 46% 54% 0% 49% 51% 75% 25% 0% 75% 0.22 3 3 5 0% 70% 30% 0% 25% 75% 75% 25% 0% 75% 0.25 4 3 5 0% 0% 100% 40% 60% 0% 35% 60% 5% 40% 0.29 5 3 5 38% 62% 0% 0% 0% 100% 37% 58% 5% 38% 0.33 Table 3: Districting plans that maximize minority voters’ utility, under the assumptions: N BD = 25%, N W D = 40%, N R = 35%, X BDBD = 0.1, X W DBD = 0.3, X RBD = 0, χ 1W D = 20%, χ 2W D = χ 3W D = 50%

Authors: Epstein, David.
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background image
4
ANALYSIS
19
π
BD
π
W D
π
R
n
1
BD
n
1
W D
n
1
R
n
2
BD
n
2
W D
n
2
R
n
3
BD
n
3
W D
n
3
R
V (D)
Util.
1
3
1
75%
0%
25%
0%
76%
24%
0%
44%
56%
75%
0.25
2
3
1
44%
0%
56%
31%
20%
49%
0%
100%
0%
44%
0.32
3
3
1
0%
100%
0%
39%
0%
61%
36%
20%
44%
39%
0.39
4
3
1
0%
100%
0%
38%
0%
62%
37%
20%
43%
38%
0.43
5
3
1
30%
0%
70%
15%
85%
0%
30%
35%
35%
15%
0.48
1
3
2
0%
20%
80%
75%
0%
25%
0%
100%
0%
75%
0.20
2
3
2
75%
0%
25%
0%
37%
63%
0%
83%
17%
75%
0.25
3
3
2
42%
0%
58%
33%
20%
47%
0%
100%
0%
42%
0.30
4
3
2
35%
0%
65%
11%
89%
0%
29%
31%
40%
24%
0.35
5
3
2
30%
0%
70%
19%
81%
0%
26%
39%
35%
11%
0.40
1
3
3
0%
20%
80%
0%
100%
0%
75%
0%
25%
75%
0.17
2
3
3
0%
40%
60%
75%
0%
25%
0%
80%
20%
75%
0.22
3
3
3
15%
1%
85%
30%
61%
9%
30%
58%
12%
15%
0.25
4
3
3
25%
69%
6%
25%
48%
27%
25%
3%
72%
0%
0.31
5
3
3
25%
55%
20%
25%
33%
42%
25%
32%
43%
0%
0.36
1
3
4
0%
45%
55%
75%
25%
0%
0%
50%
50%
75%
0.17
2
3
4
0%
76%
24%
75%
25%
0%
0%
19%
81%
75%
0.22
3
3
4
0%
0%
100%
0%
95%
5%
75%
25%
0%
75%
0.25
4
3
4
39%
61%
0%
36%
59%
5%
0%
0%
100%
39%
0.29
5
3
4
7%
0%
93%
33%
55%
12%
35%
65%
0%
28%
0.33
1
3
5
0%
11%
89%
0%
84%
16%
75%
25%
0%
75%
0.17
2
3
5
0%
46%
54%
0%
49%
51%
75%
25%
0%
75%
0.22
3
3
5
0%
70%
30%
0%
25%
75%
75%
25%
0%
75%
0.25
4
3
5
0%
0%
100%
40%
60%
0%
35%
60%
5%
40%
0.29
5
3
5
38%
62%
0%
0%
0%
100%
37%
58%
5%
38%
0.33
Table 3: Districting plans that maximize minority voters’ utility, under the
assumptions: N
BD
= 25%, N
W D
= 40%, N
R
= 35%, X
BD
BD
= 0.1, X
W D
BD
=
0.3, X
R
BD
= 0, χ
1
W D
= 20%, χ
2
W D
= χ
3
W D
= 50%


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