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Prof. Justin Levitt's Doug Spencer's Guide to Drawing the Electoral Lines
Colorado | Process

2020 Colorado Maps

Last Updated Oct 13, 2021
Cycle 2020

Overview

In 2020 Colorado’s new districts were drawn by two independent 12-member commissions that were established by ballot initiative in 2018: the Colorado Independent Congressional Redistricting Commission and the Colorado Independent Legislative Redistricting Commission. The Colorado Supreme Court automatically reviews maps approved by the Commissions. The Court must make its decision on the congressional map by Nov. 1, 2021 and the state legislative maps by Nov. 15, 2021 [Colo. Const. art. V, ยงยง 44.5, 48.3].

The Independent Congressional Commission approved a congressional map on Sept. 28, 2021 and the Supreme Court heard testimony from concerned citizens on Oct. 12, 2021.

The Independent Legislative Commission approved state House and Senate maps on Oct. 11, 2021 and the Supreme Court heard testimony from concerned citizens on Oct. 25, 2021.

Maps

Download proposed and enacted maps, starting with the most recent.

Highlighted document

Final approved plan

Proposed Date Sep 28, 2021

Level Congress

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Third staff plan

Proposed Date Sep 23, 2021

Level Congress

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Second staff plan

Proposed Date Sep 15, 2021

Level Congress

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First staff plan

Proposed Date Sep 3, 2021

Level Congress

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Preliminary plan

Proposed Date Jun 23, 2021

Level Congress

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Highlighted document

Final approved plan

Proposed Date Oct 11, 2021

Level State Upper

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Third staff plan

Proposed Date Oct 5, 2021

Level State Upper

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Second staff plan

Proposed Date Sep 23, 2021

Level State Upper

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First staff plan

Proposed Date Sep 13, 2021

Level State Upper

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Preliminary plan

Proposed Date Jun 29, 2021

Level State Upper

Preview Map Shapefile GeoJSON PDF

Final approved plan

Proposed Date Oct 11, 2021

Level State Lower

Preview Map Shapefile GeoJSON PDF

Third staff plan

Proposed Date Oct 5, 2021

Level State Lower

Preview Map Shapefile GeoJSON PDF

Second staff plan

Proposed Date Sep 23, 2021

Level State Lower

Preview Map Shapefile GeoJSON PDF

First staff plan

Proposed Date Sep 13, 2021

Level State Lower

Preview Map Shapefile GeoJSON PDF

Preliminary plan

Proposed Date Jun 29, 2021

Level State Lower

Preview Map Shapefile GeoJSON PDF

Preview: Map Name