{ "schemaVersion": "2.0.0", "proposalId": "one-boise", "publicationDate": "2026-07-21", "lastUpdated": "2026-07-21", "status": "evidentiary-voting-rights-screen", "method": { "pl2020": "Join official 2020 Census PL 94-171 P3/P4 block voting-age counts to the same block-to-district assignment used by the compact map.", "cvap2020to2024": "Allocate each official 2020-2024 ACS CVAP block-group estimate to intersecting compact districts by that district share of the block group 2020 PL voting-age population. The denominator includes the entire block group, so population outside the successor city is not assigned to a district.", "alternativeDistrict": "Exact 0/1 dynamic programming tests every population sum in the envelope without requiring contiguity, compactness, preservation of municipalities, or completion of the other six districts. Failure in this deliberately broader universe proves failure under the compact map rules.", "lineDrawingOrder": "The district-block assignment is fixed and SHA-256 fingerprinted before this builder opens PL P3/P4 or CVAP data. The line-drawing builder uses total population, official geometry, contiguity, and the nonracial compact rules; it does not consume race, ethnicity, or citizenship data." }, "fixedMapBeforeDemographics": { "artifact": "district-block-assignments.json", "sha256": "fdc7008b994213d89e461927db96e35aef440fbf1bd9a6f768d3f07cf043d53b", "demographicsUsedToDrawLines": false, "lineDrawingInputs": [ "2020 Census total population", "official municipal geometry", "official election-precinct geometry", "statutory municipal-island links", "compact districting rules" ], "postMapAuditInputs": [ "2020 Census PL P3/P4 voting-age counts", "2020-2024 ACS CVAP estimates and margins of error" ] }, "districts": [ { "districtId": "district-1", "pl2020": { "vap": 26988, "whiteAloneVap": 22667, "blackAloneVap": 176, "aianAloneVap": 130, "asianAloneVap": 1849, "nhpiAloneVap": 73, "otherAloneVap": 387, "twoOrMoreVap": 1706, "hispanicVap": 1352, "nonHispanicWhiteAloneVap": 22294, "nonHispanicBlackAloneVap": 171, "nonHispanicAianAloneVap": 94, "nonHispanicAsianAloneVap": 1841, "nonHispanicNhpiAloneVap": 64, "nonHispanicOtherAloneVap": 88, "nonHispanicTwoOrMoreVap": 1084, "minorityVap": 4694, "hispanicVapShare": 0.05009633911368015, "nonHispanicBlackAloneVapShare": 0.0063361493997332145, "nonHispanicAsianAloneVapShare": 0.06821550318660145, "minorityVapShare": 0.17392915369793982 }, "cvap2020to2024": { "cvap": 25940.519, "aianAloneCvap": 106.027, "asianAloneCvap": 1255.586, "blackAloneCvap": 234.327, "nhpiAloneCvap": 96, "whiteAloneCvap": 22083.419, "aianWhiteCvap": 193.748, "asianWhiteCvap": 250.128, "blackWhiteCvap": 164.043, "aianBlackCvap": 3.957, "remainderMultiracialCvap": 52.93, "hispanicCvap": 1500.352, "nonHispanicWhiteAloneCvap": 22083.419, "minorityCvap": 3857.1, "hispanicCvapShare": 0.05783816751940823, "blackAloneCvapShare": 0.009033242371001187, "asianAloneCvapShare": 0.04840251468841378, "minorityCvapShare": 0.14869016458984388 } }, { "districtId": "district-2", "pl2020": { "vap": 29175, "whiteAloneVap": 25445, "blackAloneVap": 446, "aianAloneVap": 169, "asianAloneVap": 626, "nhpiAloneVap": 45, "otherAloneVap": 531, "twoOrMoreVap": 1913, "hispanicVap": 1706, "nonHispanicWhiteAloneVap": 24919, "nonHispanicBlackAloneVap": 435, "nonHispanicAianAloneVap": 108, "nonHispanicAsianAloneVap": 605, "nonHispanicNhpiAloneVap": 37, "nonHispanicOtherAloneVap": 154, "nonHispanicTwoOrMoreVap": 1211, "minorityVap": 4256, "hispanicVapShare": 0.05847472150814053, "nonHispanicBlackAloneVapShare": 0.014910025706940874, "nonHispanicAsianAloneVapShare": 0.0207369323050557, "minorityVapShare": 0.1458783204798629 }, "cvap2020to2024": { "cvap": 29869.899, "aianAloneCvap": 93.713, "asianAloneCvap": 438.544, "blackAloneCvap": 231.245, "nhpiAloneCvap": 4, "whiteAloneCvap": 26386.946, "aianWhiteCvap": 246.184, "asianWhiteCvap": 432.601, "blackWhiteCvap": 61.966, "aianBlackCvap": 0, "remainderMultiracialCvap": 88.793, "hispanicCvap": 1885.908, "nonHispanicWhiteAloneCvap": 26386.946, "minorityCvap": 3482.954, "hispanicCvapShare": 0.06313742338396408, "blackAloneCvapShare": 0.007741727766808322, "asianAloneCvapShare": 0.014681790986939555, "minorityCvapShare": 0.11660413128205555 } }, { "districtId": "district-3", "pl2020": { "vap": 29658, "whiteAloneVap": 24358, "blackAloneVap": 608, "aianAloneVap": 221, "asianAloneVap": 746, "nhpiAloneVap": 73, "otherAloneVap": 1520, "twoOrMoreVap": 2132, "hispanicVap": 2808, "nonHispanicWhiteAloneVap": 23628, "nonHispanicBlackAloneVap": 592, "nonHispanicAianAloneVap": 156, "nonHispanicAsianAloneVap": 729, "nonHispanicNhpiAloneVap": 69, "nonHispanicOtherAloneVap": 319, "nonHispanicTwoOrMoreVap": 1357, "minorityVap": 6030, "hispanicVapShare": 0.09467934452761481, "nonHispanicBlackAloneVapShare": 0.01996088745026637, "nonHispanicAsianAloneVapShare": 0.024580214444669228, "minorityVapShare": 0.20331782318430103 }, "cvap2020to2024": { "cvap": 29659.811, "aianAloneCvap": 114.846, "asianAloneCvap": 289.726, "blackAloneCvap": 362.383, "nhpiAloneCvap": 78, "whiteAloneCvap": 25147.54, "aianWhiteCvap": 185, "asianWhiteCvap": 416.119, "blackWhiteCvap": 90, "aianBlackCvap": 0, "remainderMultiracialCvap": 60, "hispanicCvap": 2916.198, "nonHispanicWhiteAloneCvap": 25147.54, "minorityCvap": 4512.271, "hispanicCvapShare": 0.09832152226192444, "blackAloneCvapShare": 0.012217983410079635, "asianAloneCvapShare": 0.009768297375661844, "minorityCvapShare": 0.15213418089014596 } }, { "districtId": "district-4", "pl2020": { "vap": 28606, "whiteAloneVap": 23098, "blackAloneVap": 515, "aianAloneVap": 215, "asianAloneVap": 1105, "nhpiAloneVap": 104, "otherAloneVap": 1405, "twoOrMoreVap": 2164, "hispanicVap": 3051, "nonHispanicWhiteAloneVap": 22425, "nonHispanicBlackAloneVap": 488, "nonHispanicAianAloneVap": 153, "nonHispanicAsianAloneVap": 1079, "nonHispanicNhpiAloneVap": 97, "nonHispanicOtherAloneVap": 144, "nonHispanicTwoOrMoreVap": 1169, "minorityVap": 6181, "hispanicVapShare": 0.10665594630497098, "nonHispanicBlackAloneVapShare": 0.017059358176606306, "nonHispanicAsianAloneVapShare": 0.03771935957491435, "minorityVapShare": 0.216073551003286 }, "cvap2020to2024": { "cvap": 27358.232, "aianAloneCvap": 54, "asianAloneCvap": 708.293, "blackAloneCvap": 226.893, "nhpiAloneCvap": 20, "whiteAloneCvap": 23392.875, "aianWhiteCvap": 240.73, "asianWhiteCvap": 250.509, "blackWhiteCvap": 90.485, "aianBlackCvap": 27, "remainderMultiracialCvap": 5.359, "hispanicCvap": 2342.088, "nonHispanicWhiteAloneCvap": 23392.875, "minorityCvap": 3965.357, "hispanicCvapShare": 0.0856081540005276, "blackAloneCvapShare": 0.00829342474222689, "asianAloneCvapShare": 0.025889572669678465, "minorityCvapShare": 0.14494200515040795 } }, { "districtId": "district-5", "pl2020": { "vap": 26963, "whiteAloneVap": 22645, "blackAloneVap": 516, "aianAloneVap": 171, "asianAloneVap": 1041, "nhpiAloneVap": 55, "otherAloneVap": 642, "twoOrMoreVap": 1893, "hispanicVap": 1826, "nonHispanicWhiteAloneVap": 22161, "nonHispanicBlackAloneVap": 504, "nonHispanicAianAloneVap": 135, "nonHispanicAsianAloneVap": 1034, "nonHispanicNhpiAloneVap": 54, "nonHispanicOtherAloneVap": 139, "nonHispanicTwoOrMoreVap": 1110, "minorityVap": 4802, "hispanicVapShare": 0.06772243444720542, "nonHispanicBlackAloneVapShare": 0.018692282016096132, "nonHispanicAsianAloneVapShare": 0.03834884842191151, "minorityVapShare": 0.1780959092089159 }, "cvap2020to2024": { "cvap": 27186.327, "aianAloneCvap": 47.289, "asianAloneCvap": 945.742, "blackAloneCvap": 94.786, "nhpiAloneCvap": 69.414, "whiteAloneCvap": 23717.613, "aianWhiteCvap": 146.383, "asianWhiteCvap": 252.721, "blackWhiteCvap": 97.738, "aianBlackCvap": 0, "remainderMultiracialCvap": 387.863, "hispanicCvap": 1426.779, "nonHispanicWhiteAloneCvap": 23717.613, "minorityCvap": 3468.714, "hispanicCvapShare": 0.052481500733596066, "blackAloneCvapShare": 0.003486526420147146, "asianAloneCvapShare": 0.034787426289186, "minorityCvapShare": 0.12759039941545555 } }, { "districtId": "district-6", "pl2020": { "vap": 28013, "whiteAloneVap": 22730, "blackAloneVap": 774, "aianAloneVap": 234, "asianAloneVap": 886, "nhpiAloneVap": 124, "otherAloneVap": 1238, "twoOrMoreVap": 2027, "hispanicVap": 2736, "nonHispanicWhiteAloneVap": 22025, "nonHispanicBlackAloneVap": 754, "nonHispanicAianAloneVap": 172, "nonHispanicAsianAloneVap": 872, "nonHispanicNhpiAloneVap": 122, "nonHispanicOtherAloneVap": 129, "nonHispanicTwoOrMoreVap": 1203, "minorityVap": 5988, "hispanicVapShare": 0.09766893942098312, "nonHispanicBlackAloneVapShare": 0.026916074679613038, "nonHispanicAsianAloneVapShare": 0.0311284046692607, "minorityVapShare": 0.21375789811873058 }, "cvap2020to2024": { "cvap": 27275.402, "aianAloneCvap": 102.059, "asianAloneCvap": 471.242, "blackAloneCvap": 542.337, "nhpiAloneCvap": 143, "whiteAloneCvap": 22312.107, "aianWhiteCvap": 238.02, "asianWhiteCvap": 306.281, "blackWhiteCvap": 104.635, "aianBlackCvap": 0, "remainderMultiracialCvap": 126.948, "hispanicCvap": 2928.774, "nonHispanicWhiteAloneCvap": 22312.107, "minorityCvap": 4963.296, "hispanicCvapShare": 0.10737783157845697, "blackAloneCvapShare": 0.01988375599715033, "asianAloneCvapShare": 0.017277172425383396, "minorityCvapShare": 0.18196965603655973 } }, { "districtId": "garden-city-district", "pl2020": { "vap": 29297, "whiteAloneVap": 25053, "blackAloneVap": 387, "aianAloneVap": 206, "asianAloneVap": 472, "nhpiAloneVap": 59, "otherAloneVap": 891, "twoOrMoreVap": 2229, "hispanicVap": 2298, "nonHispanicWhiteAloneVap": 24517, "nonHispanicBlackAloneVap": 366, "nonHispanicAianAloneVap": 139, "nonHispanicAsianAloneVap": 463, "nonHispanicNhpiAloneVap": 54, "nonHispanicOtherAloneVap": 113, "nonHispanicTwoOrMoreVap": 1347, "minorityVap": 4780, "hispanicVapShare": 0.07843806533092125, "nonHispanicBlackAloneVapShare": 0.01249274669761409, "nonHispanicAsianAloneVapShare": 0.015803665904358808, "minorityVapShare": 0.16315663719834794 }, "cvap2020to2024": { "cvap": 28885.184, "aianAloneCvap": 71.944, "asianAloneCvap": 242.779, "blackAloneCvap": 158.85, "nhpiAloneCvap": 0, "whiteAloneCvap": 25851.247, "aianWhiteCvap": 266.39, "asianWhiteCvap": 253.631, "blackWhiteCvap": 187, "aianBlackCvap": 11, "remainderMultiracialCvap": 78, "hispanicCvap": 1764.343, "nonHispanicWhiteAloneCvap": 25851.247, "minorityCvap": 3033.937, "hispanicCvapShare": 0.06108123998452083, "blackAloneCvapShare": 0.005499368058918182, "asianAloneCvapShare": 0.008404969612015627, "minorityCvapShare": 0.10503437316272037 } } ], "alternativeDistrictCertificate": { "populationEnvelope": { "ideal": 35553.142857142855, "floor": 31998, "ceiling": 39108, "rule": "The search allows every whole-precinct subset from 90 to 110 percent of ideal, a wider envelope than any district in a seven-seat plan with maximum total deviation below 10 percent can occupy." }, "searchRule": "Exact 0/1 dynamic programming tests every population sum in the envelope without requiring contiguity, compactness, preservation of municipalities, or completion of the other six districts. Failure in this deliberately broader universe proves failure under the compact map rules.", "vap": [ { "group": "hispanic", "majorityPossible": false, "maximumMajorityMargin": -17659, "certificatePopulation": 32000, "certificateGroupVap": 3579, "certificateTotalVap": 24817, "majorityMarginWitnessShare": 0.1442156586211065, "certificatePrecincts": [ 1506, 1514, 1517, 1610, 1614, 1616, 1706, 1708, 1715, 1814, 2221 ] }, { "group": "black", "majorityPossible": false, "maximumMajorityMargin": -22547, "certificatePopulation": 32005, "certificateGroupVap": 529, "certificateTotalVap": 23605, "majorityMarginWitnessShare": 0.02241050624867613, "certificatePrecincts": [ 1501, 1506, 1507, 1508, 1512, 1513, 1606, 1702, 1706, 1814, 1818, 1820, 1913, 2015 ] }, { "group": "aian", "majorityPossible": false, "maximumMajorityMargin": -23171, "certificatePopulation": 32000, "certificateGroupVap": 107, "certificateTotalVap": 23385, "majorityMarginWitnessShare": 0.0045755826384434465, "certificatePrecincts": [ 1501, 1506, 1508, 1511, 1512, 1701, 1702, 1814, 1817, 1818, 1820, 1903, 1925, 2009, 2015, 2120, 2221 ] }, { "group": "asian", "majorityPossible": false, "maximumMajorityMargin": -19779, "certificatePopulation": 32020, "certificateGroupVap": 1962, "certificateTotalVap": 23703, "majorityMarginWitnessShare": 0.08277433236299203, "certificatePrecincts": [ 1501, 1506, 1511, 1512, 1701, 1806, 1813, 1814, 1815, 1816, 1817, 1818, 1820, 1925, 2015, 2209, 2210, 2221 ] }, { "group": "nhpi", "majorityPossible": false, "maximumMajorityMargin": -23263, "certificatePopulation": 32007, "certificateGroupVap": 71, "certificateTotalVap": 23405, "majorityMarginWitnessShare": 0.003033539841914121, "certificatePrecincts": [ 1501, 1506, 1508, 1520, 1701, 1702, 1814, 1817, 1818, 1820, 1903, 1913, 1925, 2009, 2209, 2221 ] } ], "cvapSensitivity": [ { "group": "hispanic", "majorityPossibleAtConservativeMoeBound": false, "maximumMajorityMargin": -3492.351, "certificatePopulation": 32149, "certificateGroupUpper": 6276.733, "certificateTotalLower": 16045.817, "majorityMarginWitnessShareUpper": 0.3911756494398147, "certificatePrecincts": [ 1511, 1513, 1517, 1608, 1610, 1616, 1617, 1705, 1708, 1915 ] }, { "group": "black", "majorityPossibleAtConservativeMoeBound": false, "maximumMajorityMargin": -11559.32, "certificatePopulation": 32042, "certificateGroupUpper": 1215.801, "certificateTotalLower": 13990.923, "majorityMarginWitnessShareUpper": 0.08689929563563101, "certificatePrecincts": [ 1508, 1513, 1514, 1517, 1520, 1707, 1708, 1715, 1718, 1817, 1908, 2209 ] }, { "group": "aian", "majorityPossibleAtConservativeMoeBound": false, "maximumMajorityMargin": -12362.515, "certificatePopulation": 32035, "certificateGroupUpper": 619.426, "certificateTotalLower": 13601.366, "majorityMarginWitnessShareUpper": 0.04554144470588511, "certificatePrecincts": [ 1508, 1510, 1511, 1513, 1517, 1520, 1711, 1802, 1805, 1806, 1815, 1820, 1908, 2210 ] }, { "group": "asian", "majorityPossibleAtConservativeMoeBound": false, "maximumMajorityMargin": -9232.604, "certificatePopulation": 32059, "certificateGroupUpper": 2722.582, "certificateTotalLower": 14677.768, "majorityMarginWitnessShareUpper": 0.1854901900936382, "certificatePrecincts": [ 1508, 1511, 1513, 1517, 1520, 1705, 1805, 1810, 1813, 1814, 1819, 1820, 1908, 2009, 2221 ] }, { "group": "nhpi", "majorityPossibleAtConservativeMoeBound": false, "maximumMajorityMargin": -12583.279, "certificatePopulation": 32049, "certificateGroupUpper": 553.389, "certificateTotalLower": 13690.058, "majorityMarginWitnessShareUpper": 0.040422720093943924, "certificatePrecincts": [ 1508, 1510, 1511, 1513, 1517, 1520, 1805, 1806, 1814, 1815, 1820, 1908, 2009, 2210 ] } ], "cvapMoeRule": "For a deliberately conservative sensitivity bound, every allocated protected-group estimate is increased by its full published 90-percent margin of error and every allocated total-CVAP estimate is reduced by its full margin of error. Allocated margins are summed rather than root-sum-squared, further widening the bound.", "coalition": { "definition": "The broadest nonoverlapping protected-group coalition: every Hispanic or Latino voter plus every non-Hispanic voter not classified as White alone. In PL P4 this equals total VAP minus non-Hispanic White-alone VAP. In the ACS CVAP special tabulation it equals total CVAP minus non-Hispanic White-alone CVAP.", "ninthCircuitRule": "Badillo v. City of Stockton did not decide that a coalition claim is categorically available; it tested a combined Black-Hispanic claim and required proof that the combined group is politically cohesive. Allen v. Milligan (2026) confirms after Louisiana v. Callais that the minority group must be politically cohesive and that majority bloc voting must defeat its preferred candidate for racial reasons after party affiliation is controlled.", "vap": { "majorityPossible": false, "maximumMajorityMargin": -11261, "certificatePopulation": 32032, "certificateCoalitionVap": 6687, "certificateTotalVap": 24635, "majorityMarginWitnessShare": 0.2714430688045464, "certificatePrecincts": [ 1506, 1513, 1517, 1518, 1610, 1616, 1708, 1715, 1814, 1820, 2221 ] }, "cvapSensitivity": { "rule": "Preserve the published identity coalition CVAP = total CVAP minus non-Hispanic White-alone CVAP, so the majority margin is total CVAP minus twice White-alone CVAP. Exact dynamic programming maximizes that point-estimate margin. For sampling error, bound A applies the Census square-root-of-summed-squares method within each precinct and the triangle inequality across selected precincts; bound B gives every subset the full citywide Census RSS allowance. The true margin is no greater than either bound and therefore no greater than any convex combination of them. The builder minimizes that upper envelope over the convex weight and exactly maximizes each weighted additive bound by population dynamic programming. It separately publishes an eight-precinct grouped triangle bound. The lowest certified outer bound governs every whole-precinct subset in the population envelope.", "majorityPossibleAtConservativeMoeBound": false, "maximumPointEstimateMajorityMargin": -11867.634, "citywideTotalCvapMoeAllowance": 4234.702, "citywideWhiteAloneCvapMoeAllowance": 3957.61, "totalMajorityMarginMoeAllowance": 12149.921, "groupedOuterBoundPrecinctsPerGroup": 8, "groupedOuterBoundGroupCount": 14, "groupedMaximumMajorityMarginUpperBound": 1353.796, "optimizedHybridWeight": 0.485720441, "optimizedHybridMaximumMajorityMarginUpperBound": -127.292, "maximumMajorityMarginUpperBound": -127.292, "certificatePopulation": 32046, "certificatePrecincts": [ 1517, 1520, 1619, 1706, 1708, 1718, 1817, 1818, 1820, 1905, 1908, 1915 ] } } }, "section2Finding": "No whole-precinct comparator in the exact, spatially unconstrained 90-to-110-percent population search can satisfy the first Gingles majority precondition. Every single-group VAP maximum is negative. The broadest nonoverlapping protected-group coalition also fails: its maximum VAP majority margin is -11,261 and its identity-preserving adverse CVAP majority-margin outer bound is -127.292. Badillo v. City of Stockton does not squarely decide whether coalition claims are cognizable in the Ninth Circuit, but the broader assumed coalition cannot clear the numerical gate. Louisiana v. Callais requires any Section 2 comparator to be drawn without race as a criterion and to meet every legitimate districting objective. This certificate searches a broader universe and still finds no majority. The compact map was fixed before demographic data were opened, so Section 2 supplies no basis for a race-based alteration.", "sourceRefs": [ "census-2020-pl-p3-p4", "census-2020-2024-cvap", "census-acs-moe-guidance-2026", "census-2020-block-service", "thornburg-v-gingles", "bartlett-v-strickland", "badillo-v-city-of-stockton", "louisiana-v-callais-2026", "allen-v-milligan-2026" ] }