In Re Reapportionment of the Colorado General Assembly

647 P.2d 209, 1982 Colo. LEXIS 558
Supreme Court of Colorado·Decided March 12, 1982·No. 82SA6·Published·Cited by 11 cases

Opinion

PER CURIAM.

The Colorado Reapportionment Commission (Commission) resubmitted its plan for reapportionment of the General Assembly to us as required in Colo.Const. Art. V, § 48(1)(e). In In re Reapportionment of the Colorado General Assembly, - Colo. -, 647 P.2d 191 (1982), we approved the plan first adopted by the Commission (original plan) with the exception of a portion establishing the sequence of elections in Senate Districts 13 and 34. The Commission’s revised plan, adopted March 8, 1982 (new plan), provides for the election of a state senator in Senate District 13 in 1982 as we required; however, instead of simply setting the election in Senate District 34 for 1984, as we suggested, the Commission substantially redrew the boundaries for all six senate districts in Denver 1 and changed the election date for Senate District 30 from 1982 to 1984. We disapprove the Commission’s new plan for Denver senate district boundaries because it is unconstitutional under the criteria set out in Colo.Const. Art. V, §§ 46 and 47. We approve that portion of the new plan which designates that the election of a senator in District 13 take place in 1982; however, we order that the election in Senate District 34 take place in 1984 as we originally suggested. We reiterate our approval of the Commission’s original plan drawing senate and house district boundaries including that portion of the plan designating election years for senate districts except for districts 13 and 34. 2

The Colorado Constitution lists a hierarchy of criteria for measuring the adequacy of a reapportionment plan. As described in In re Reapportionment of the Colorado General Assembly, supra, they are: the requirement of substantial equality of population among the senate districts and among the house districts, Colo.Const. Art. V, § 46; a restriction on unnecessary division of counties, Colo.Const. Art. V, § 47(2) (not relevant here where the senate districts at issue are wholly within the city and county of Denver); the requirement that each district be as compact in area as possible and the aggregate linear distance of all district *211 boundaries as short as possible, Colo.Const. Art. V, § 47(1); and preservation wherever possible of communities of interest, including ethnic, cultural, economic, trade area, geographic, and demographic factors, Colo.Const. Art. V, § 47(3).

In our comprehensive scrutiny of the original plan, we described our role as a narrow one: to measure the plan against the constitutional standards. There, we stated that, in the context of reviewing the entire statewide reapportionment plan, “The choice among alternative plans, each consistent with constitutional requirements, is for the Commission and not the Court.” In re Reapportionment of the Colorado General Assembly, supra, - Colo. -, 647 P.2d 194.

Our role now is somewhat different. To satisfy our directions on remand, the Commission, after considering only two alternatives, and without the benefit of public comment or lengthy deliberations, presented us with a new plan less consistent with the constitutional criteria than the one we already had substantially approved. In reviewing the constitutional adequacy of this submission, deference to Commission expertise is inappropriate. The “as possible” language in section 47 of the Constitution leaves us no choice but to compare the two alternatives which the Commission considered and to determine for ourselves which better satisfies the constitutional requirements.

The first criterion, equality of population among the senate districts in Denver, is met by each plan. The deviation between the most populous and least populous senate district in Denver under the Commission’s first plan was 3.77 percent, within the Constitution’s five percent deviation limit. 3 The deviation between the most populous and the least populous senate districts in the Commission’s new plan is 3.74 percent. Including alterations recently made by the federal census bureau, the original plan’s most populous district had 3,113 more people than the least populous district. In the new plan, the most populous district has 3,091 more people than the least populous district. This amounts to a difference of 22 people between the two plans, a difference we consider de minimus. Therefore, we conclude that both plans equally achieve the paramount objective of equal population.

The second criterion is that each district shall be as compact as possible and the aggregate linear distance of all district boundaries shall be as short as possible. The aggregate linear distance of the new and old district boundaries are roughly equal. 4 However, the district configurations in the original plan are more compact than those in the new plan. In approving the legislative boundaries in the original plan we noted that, for constitutional purposes, a “compact” district is defined as “a geographic area whose boundaries are as nearly equidistant as possible from the geographic center of the area being considered .. .. ” Acker v. Love, 178 Colo. 175, 177, 496 P.2d 75, 76 (1972).

According to the measurements submitted to us, 5 two different methods of measuring compactness both yield the conclusion that the original districts are more *212 compact than the new ones. One method of measurement involves comparing each district’s perimeter to its area. A smaller perimeter/area ratio indicates compactness. The average ratio of perimeter to area in the original plan is less than in the new plan. The second method involves measuring the polar moment of inertia of each district. This method quantifies the distribution of the points in a region around its geographic center. A smaller polar moment of inertia indicates a region in which the points are more closely grouped around the region’s geographic center and which is thus more compact. The average polar moment of inertia for the districts in the original plan is significantly less than for the districts in the new plan. On the basis of these two types of measurements, we conclude that the original plan better satisfies the constitutional requirement of compactness.

Consideration of the third criterion, preservation of communities of interest, provides the most dramatic contrast between-the two plans. Only one protest, filed by four Republican district captains, challenged the original plan as violative of an unspecified community of interest and ethnicity in Senate District 32. In contrast, numerous objectors protested that the new plan violates Denver’s communities of interest, including ethnic, cultural, economic, trade area, geographic and demographic factors.

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In Re Reapportionment of the Colorado General Assembly, 647 P.2d 209, 1982 Colo. LEXIS 558 (Colo. 1982).

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