Redistricting commission

!scope="col" style="width:12em;"| State & commission

!scope="col"| Commission jurisdiction

!scope="col"| Commission type & voting

!scope="col"| No. of members

!scope="col"| Member selection criteria & process

!scope="col"| Legal authority

!scope="row"| Arizona Independent Redistricting Commission

| Congressional & legislative districts

| Bipartisan;
majority-rules

| style="text-align:center"| 5

| The commission on appellate court appointees creates a pool of 25 nominees, ten from each of the two largest parties and five not from either of the two largest parties. The highest-ranking officer of the House appoints one from the pool, then the minority leader of the House appoints one, then the highest-ranking officer of the Senate appoints one, then the minority leader of the Senate appoints one. These four appoint a fifth from the pool, not a member of any party already represented on the commission, as chair. If the four deadlock, the commission on appellate court appointments appoints the chair.

| Arizona Constitution
Article 4, pt. 2, § 1{{cite web |url=http://www.azleg.gov/FormatDocument.asp?inDoc=/const/4/1.p2.htm |title=Arizona State Legislature |access-date=2013-09-07}}

| Congressional, legislative, BoE districts

| Non-partisan;
super-majority (majority of each group) needed

| style="text-align:center"| 14

| The commission was established in 2010 and consists of 14 members: 5 Democrats, 5 Republicans, and 4 members from neither party. Government auditors select 60 registered voters from an applicant pool. Legislative leaders can reduce the pool; the auditors then pick 8 commission members by lottery, and those commissioners pick six additional members for the 14 total. For approval, district boundaries need votes from 3 Democratic commissioners, 3 Republican commissioners, and 3 commissioners from neither party.

| California Constitution
Article XXI{{cite web |url=http://www.leginfo.ca.gov/.const/.article_21 |title=CALIFORNIA CONSTITUTION ARTICLE 21 REDISTRICTING OF SENATE, ASSEMBLY, CONGRESSIONAL AND BOARD OF EQUALIZATION DISTRICTS |access-date=2013-09-07}}

| Congressional & legislative districts

| Bipartisan;
majority-rules

| style="text-align:center"| 9

| No commission member may run for the legislature in the two elections following redistricting. President of the Senate selects two; Speaker of the House selects two. Members of each house belonging to the party or parties different from that of the president or the speaker shall designate one of their number for each house, and the two so designated shall each select two [more?] members of the commission. These eight select the ninth member, who is the chair.

| Hawaii Constitution
Article IV{{cite web |url=http://hawaii.gov/lrb/con/conart4.html |title=THE CONSTITUTION OF THE STATE OF HAWAII ARTICLE IV REAPPORTIONMENT |access-date=2013-09-07}}

| Congressional & legislative districts

| Bipartisan;
2/3 super-majority required

| style="text-align:center"| 6

| Leaders of two largest political parties in each house of the legislature each designate one member; chairs of the two parties whose candidates for governor received the most votes in the last election each designate one member. No member may be an elected or appointed official in the state at the time of designation.

| Idaho Constitution
Article III, § 2{{cite web |url=http://legislature.idaho.gov/idstat/IC/ArtIIISect2.htm |title=CONSTITUTION OF THE STATE OF IDAHO ARTICLE III LEGISLATIVE DEPARTMENT |access-date=2013-09-07}}

| Legislative & congressional districts

| Bipartisan;
majority-rules(?)

| style="text-align:center"| 5

| No member may be a public employee or official; members cannot run for public office in the two years after the completion of redistricting. Majority and minority leaders of both houses of the Legislature each select one member; those four select a fifth, who is the chair of the commission.

| Montana Constitution
Article IV, § 14{{cite web |url=http://leg.mt.gov/bills/mca/Constition/V/14.htm |title= Constitution of Montana -- Article V -- THE LEGISLATURE – Section 14 |access-date=2013-09-07}}

| Congressional & legislative districts

| Bipartisan;
majority rules

| style="text-align:center"| Congressional:
13
Legislative:
10 (or 11)

| Redistricting Commission: The commission has 13 members. The President of the Senate and Assembly Speaker each name two members; the minority leaders of both houses each name two members; and the state's Democratic and Republican party chairpersons each name two members. The 12 members then select a 13th "tie-breaking" member to chair the commission; if they cannot agree on the 13th member, then each party submits a name to the state's Supreme Court, which then chooses one of the submissions as the 13th member.
Apportionment Commission: The chairs of the two major parties each select five members. If these 10 members cannot develop a plan in the allotted time, the chief justice of the state Supreme Court will appoint an 11th member.

| New Jersey Constitution
Article II, Sec. II{{cite web |url=http://lis.njleg.state.nj.us/cgi-bin/om_isapi.dll?clientID=231727&Depth=4&TD=WRAP&advquery=Article%20II%20Section%20II&headingswithhits=on&infobase=njconst.nfo&rank=&record={7}&softpage=Doc_Frame_Pg42&wordsaroundhits=2&x=0&y=0&zz= |title=NEW JERSEY STATE CONSTITUTION 1947 (UPDATED THROUGH AMENDMENTS ADOPTED IN NOVEMBER, 2012) ARTICLE II ELECTIONS AND SUFFRAGE SECTION II |access-date=2013-09-07}} & Article IV, Sec. III{{cite web |url=http://lis.njleg.state.nj.us/cgi-bin/om_isapi.dll?clientID=231727&Depth=4&TD=WRAP&advquery=Article%20IV%20Section%20III&headingswithhits=on&infobase=njconst.nfo&rank=&record={13}&softpage=Doc_Frame_Pg42&wordsaroundhits=2&x=0&y=0&zz= |title=NEW JERSEY STATE CONSTITUTION 1947 (UPDATED THROUGH AMENDMENTS ADOPTED IN NOVEMBER, 2012) ARTICLE IV LEGISLATIVE SECTION III |access-date=2013-09-07}}

| Congressional & legislative districts

| Bipartisan;
majority (of 4) rules

| style="text-align:center"| 5
(only 4 voting)

| No elected official and no person elected to legislative district, county, or state political party office may serve on the commission. Majority and minority leaders of the House and Senate each select one member. These four select a non-voting fifth member to chair the commission. If they fail to do so by January 31, the state Supreme Court will select the fifth member within five days. No commission member may be a public official.

| Washington Constitution
Article II, § 43{{cite web |url=http://www.leg.wa.gov/lawsandagencyrules/pages/constitution.aspx |title= Washington State Constitution |access-date=2013-09-07}}

!scope="row"| Alaska

| Legislative districts

| Non-partisan;
majority-rules

| style="text-align:center"| 5

| No member may be a public employee or official. Governor appoints two; president of the Senate appoints one; speaker of the House appoints one; chief justice of the Supreme Court appoints one. At least one member must be a resident of each judicial district.

| Alaska Constitution
Article 6{{cite web |url=http://ltgov.alaska.gov/treadwell/services/alaska-constitution/article-vi-96A0legislative-apportionment.html |title=Alaska Constitution - Article 6 - Legislative Apportionment |access-date=2013-09-07}}

| Legislative districts

| Non-partisan;
majority-rules

| style="text-align:center"| 3

| Commission consists of the state's governor, secretary of state, and attorney general.

| Arkansas Constitution
Article 6{{cite web |url=http://www.arkleg.state.ar.us/assembly/Summary/ArkansasConstitution1874.pdf |title=Constitution of the State of Arkansas of 1874 |pages=38–39 |access-date=2013-09-07}}

| Legislative districts

| Non-partisan;
Colorado Supreme Court must approve

| style="text-align:center"| 11

| Legislature selects four: (speaker of the House; House minority leader; Senate majority and minority leaders; or their delegates). Governor selects three. Judiciary selects four. Maximum of four from the legislature. Each congressional district must have at least one person, but no more than two people representing it on the commission. At least one member must live west of the Continental Divide.

| Colorado Constitution
Article 5, § 48{{cite web |url=http://www.lexisnexis.com/hottopics/colorado?app=00075&view=full&interface=1&docinfo=off&searchtype=get&search=Colo.+Const.+Art.+V%2C+Section+48 |title=Colo. Const. Art. V, Section 48 - COLORADO REVISED STATUTES |access-date=2013-09-07}}

| Legislative districts

| Bipartisan;
super-majorities required

| style="text-align:center"| Senate: 10
House: 18

| No commission member may hold office in the legislature for four years after redistricting. There are two separate redistricting committees, one for each chamber of the legislature. Governor picks one person from each list of two submitted by the two main political parties in each congressional district to form the House committee; governor picks five people from two lists of 10 submitted by the two major political parties in the state to form the Senate committee.

| Missouri Constitution
Article III, § 2{{cite web |url=http://www.moga.mo.gov/const/A03002.HTM |title=Missouri Constitution Article III LEGISLATIVE DEPARTMENT Section 2 |access-date=2013-09-07}} & § 7{{cite web |url=http://www.moga.mo.gov/const/A03007.HTM |title=Missouri Constitution Article III LEGISLATIVE DEPARTMENT Section 7 |access-date=2013-09-07}}

| Legislative districts

| Non-partisan;
majority rules

| style="text-align:center"| 5

| Board consists of the governor, auditor, secretary of state, and two people selected by the legislative leaders of each major political party.

| Ohio Constitution
Article XI, § 1{{cite web |url=https://www.legislature.ohio.gov/laws/ohio-constitution?Part=11&Section=01 |title=The Ohio Constitution [The 1851 Constitution with Amendments to 2011] |access-date=2013-09-07}}

| Legislative districts

| Bipartisan;
majority rules

| style="text-align:center"| 5

| Majority and minority leaders of the legislative houses each select one member. These four select a fifth to chair. If they fail to do so within 45 days, a majority of the state Supreme Court will select the fifth member. The chair cannot be a public official.

| Pennsylvania Constitution
Article II, § 17{{cite web |url=http://sites.state.pa.us/PA_Constitution.html |title= Constitution of the Commonwealth of Pennsylvania |access-date=2013-09-07}}

!scope="col"| Redistricting jurisdiction

!scope="col"| Redistricting type

!scope="col"| Redistricting process

!scope="col"| Legal authority

| Congressional & legislative districts

| Non-partisan

| Iowa conducts redistricting unlike any other state. The Iowa system does not put the task in the hands of a commission, but rather non-partisan legislative staff develop maps for the Iowa House and Senate, as well as U.S. House districts, without any political or election data (including the addresses of incumbents). A 5-person advisory commission is also formed. This is different from all other states. The redistricting plans from the non-partisan legislative staff are then presented to the Iowa legislature for a straight "Up" or "Down" vote; if the Legislature rejects the redistricting plans, the process starts over. (Eventually, the Iowa Supreme Court will enter the process if the Legislature fails to adopt a plan three times.) Detailed descriptions of the Iowa system are available from the Iowa legislature.{{cite web |url=https://www.legis.iowa.gov/Resources/Redist/about.aspx |title=The Iowa Legislature - Iowa Redistricting - About Redistricting in Iowa |publisher=The Iowa Legislature |date= |access-date=2013-09-07}}{{cite web |url=https://www.legis.iowa.gov/docs/publications/LG/9461.pdf |title=LEGISLATIVE GUIDE TO REDISTRICTING IN IOWA |publisher=The Iowa Legislature |date= |access-date=2018-01-19}}

| Iowa Constitution
Article III, § 37,{{cite web |url=https://www.legis.iowa.gov/docs/publications/ICP/1023054.pdf |title= Constitution of the State of Iowa |access-date=2021-09-20}} and
Article III, § 34, § 35, § 36 & § 38

!scope="row" rowspan="2"| Colorado

| Congressional districts

| Non-partisan

| style="text-align:center"| 12

|4 Republicans, 4 Democrats, 4 unaffiliated voters; every congressional district will be represented; half will be chosen randomly; half will be chosen by a panel of judges considering factors such as gender, geography, ethnicity

District boundaries will be drawn by independent legislative staff.

To approve a new map, eight of the 12 members must vote in favor of it, including at least 2 unaffiliated members.{{Cite web|url=https://www.coloradoan.com/story/news/politics/elections/2018/11/06/colorado-election-results-amendments-y-and-z-pass-changing-redistricting-process/1894902002/|title=Colorado election: Amendments Y and Z pass, changing the way Colorado does redistricting|website=Coloradoan|language=en|access-date=2019-02-20}}

|Amendment Y (2018)

| Congressional and legislative districts

| Non-partisan

| style="text-align:center"| 13

|4 Republicans, 4 Democrats, and 5 members who identify with neither party; no member can be a partisan officeholder, an employee of such an officeholder, or a lobbyist

Citizens can apply, and the Secretary of State picks 200 at random, with party and geographic diversity. Republican and Democratic leaders in the Michigan House and Senate can each reject five names, up to 20 in total. Then the Secretary of State picks the 13 members at random.{{Cite news |last=Egan |first=Paul |date=2018-09-21 |title=Proposal 2 in Michigan: Pros and cons, what gerrymandering is |language=en-US |url=https://www.freep.com/story/news/local/michigan/2018/09/21/michigan-gerrymandering-proposal/1266999002/ |access-date=2020-08-31}}

The commission will have final say over the entire process of redistricting.{{Cite web|url=https://www.freep.com/story/news/politics/elections/2018/11/06/proposal-2-michigan-gerrymandering/1847078002/|title=Michigan voters approve anti-gerrymandering Proposal 2|website=Detroit Free Press|language=en|access-date=2019-02-20}}

|Proposal 2 (2018)

| Congressional and legislative districts

| Bipartisan

| style="text-align:center"| 10

|2 Members appointed by the Temporary President of the State Senate, 2 appointed by the Speaker of the Assembly, 2 appointed by the Minority leader of the State Senate, 2 appointed by the Minority leader of the Assembly, 2 appointed by the 8 legislatively appointed members. Neither member appointed by the 8 legislative appointees can be members of the 2 largest parties in the New York State Legislature. No member can be an elected partisan official, a partisan officer or employee, a lobbyist, be the chairman of a political party, or the spouse of a partisan elected official

The commission must hold 12 open public meetings, and to create maps, that meet the standards in Article III, §4(c). The maps must then be voted on, by the legislature, and signed by the governor. In the event the legislature rejects, or the governor vetoes the initial plan, and this veto is not overridden by the legislature, the commission must be notified within 15 days of the rejection. If a second proposal is rejected by the legislature, or vetoed by the governor, and not overridden by the legislature, each house of the legislature retains the right to add any amendment, which shall comply with the provisions in the article, to the legislation, which is then sent to the governor, to be signed.{{Cite web|title=Ballotpedia, New York Redistricting Commission Amendment, Proposal 1 (2014)|url=https://ballotpedia.org/New_York_Redistricting_Commission_Amendment,_Proposal_1_(2014)}}

|Proposal 1 (2014)

| Congressional and legislative districts

| Non-partisan

| style="text-align:center"| 16

|4 Republicans, 4 Democrats, (2 delegates and 2 senators from each party) and 8 citizens

Citizens can apply, and the a panel of 5 retired judges selects. Congressional maps must be approved by 6 of 8 citizens and 6 of 8 legislators. The state legislative maps must be approved by 6 of 8 citizens and 6 of 8 legislators and 3 out of 4 legislators from the chamber whose maps is being drawn. The legislature must approve commission maps but cannot modify them. If the legislature rejects 2 maps or the commission fails to agree on a map the state supreme court draws the map.{{Cite web|title=Ballotpedia, Virginia Redistricting Commission Amendment|url=https://ballotpedia.org/Virginia_Question_1,_Redistricting_Commission_Amendment_(2020)}}

| Question 1 (2020)

| Congressional, legislative, and state school board districts

| Non-partisan

| style="text-align:center"| 7

|1 member appointed by the governor; 3 appointed by the Republican leaders of the Utah legislature, 3 appointed by the Democratic leaders of the legislature; members cannot have participated in certain political activities for four or five years prior to their appointment

The commission is required to hold open, public meetings and to create maps that meet the standards set out in Proposition 4. They would then send their proposal(s) to the state legislature, which can choose to accept or reject the map(s). The chief justice of the Utah Supreme Court will recommend one or more maps to the legislature. The legislature is still allowed to propose maps, but the commission retains the right to review them, and voters could sue to block the implementation of a plan in violation of Prop 4's requirements.{{Cite web|url=https://kslnewsradio.com/1893862/proposition-4-redistricting-utah/??|title=A voter's guide to Proposition 4: redistricting in Utah|date=2018-11-02|website=KSLNewsRadio|access-date=2019-02-20}}{{Cite web|url=https://www.sltrib.com/news/politics/2019/02/17/theyve-wiped-out-prop/|title=They've wiped out Prop 2 and Prop 3, but lawmakers say Utah's anti-gerrymandering initiative may survive — for now|website=The Salt Lake Tribune|language=en-US|access-date=2019-02-20}}

|Proposition 4 (2018)

!scope="row"| Ohio

| Congressional districts

| Bipartisan

|a) entire legislature

b) 7-member commission

|Redistricted maps for congressional districts will require support of 60% of members in both the Ohio House and Senate, including 1/2 of members in the minority party.

If the legislature cannot agree, a 7-member commission including the governor, auditor, secretary of state, and 4 legislators (2 from each party), will take responsibility.

Should that commission be unable to reach an agreement, the legislature resumes control of the process, but will have lower thresholds for passing a plan (albeit with stricter rules).{{Cite web|url=https://www.cincinnati.com/story/news/politics/elections/2018/05/08/ohio-issue-1-gerrymandering/580679002/|title=Ohio voters just approved Issue 1 to curb gerrymandering in Congress|website=Cincinnati.com|language=en|access-date=2019-02-20}}

|Issue 1 (2018)