List Of CLOSED PRIMARY States – Only voters registered for the party which is holding the primary may vote.

The list of states below use a STRICTLY CLOSED primary process. Only voters registered for the party which is holding the primary may vote.

Usage

There are 12 states that use a strictly closed primary process, including:[5][4][6]

There are 21 states that have a mixed primary system, including:

  • Alaska: Parties decide who may vote in their primary election. The Alaska Democratic Party, AlaskaLibertarian Party and Alaskan Independence Party allow any registered voters. The Alaska Republican Party allows only registered Republicans, nonpartisan or undeclared voters.[7]
  • Arizona: The primary is considered semi-closed. Unaffiliated voters may choose which party’s primary they will vote in, but voters registered with a party can only vote in that party’s primary.[4]
  • Colorado: The primary is considered closed, but unaffiliated voters may choose to affiliate with a party on Election Day in order to vote.[8]
  • Connecticut: Though parties may decide to hold a semi-closed primary election, the primary is considered closed as neither the Democratic Party nor the Republican Party allows any voter but those registered with their party to vote.[4]
  • Idaho: Parties decide who may vote. The Democratic Party allows unaffiliated voters to vote in their primary. The Republican Party allows only voters registered with their party. Unaffiliated voters can choose to affiliate with a party on election day, but they will be bound to that party at the next election as well.[4]
  • Illinois: Voters do not have to register with a party, but they do have to choose, publicly, which party’s ballot they will vote on at the primary election.[9]
  • Indiana: Voters are not required to register with a party, but the ballot they get depends on their voting history, which party they have voted for most in the past.[10]
  • Iowa: The primary is closed, but voters are allowed to change their political party affiliation on election day.[11]
  • Maryland: Parties decide who may vote in their primary election and generally close it to all voters except those registered with their party.[12]
  • Massachusetts: Unaffiliated voters are allowed to vote in the primary election. They may choose which party ballot they wish to vote on and still remain unaffiliated.[13]
  • Mississippi: Voters do not have to register with a party, but they must intend to support the party nominations if they vote in the primary election.[14]
  • Nebraska: A blanket primary system is used for the nonpartisan legislature and some other statewide races.[15]
  • New Hampshire: Unaffiliated voters may vote in the primary, but in order to so they have to choose a party before voting. This changes their status from unaffiliated to affiliated with that party, unless they fill out a card to return to undeclared status.[16]
  • North Carolina: Parties decide who may vote, and they opened the primary election to unaffiliated voters. They may choose which ballot they want to vote on without affecting their unaffiliated status.[17]
  • Ohio: Only affiliated voters can vote for candidates in the primary election; however, voters do not choose their affiliation until election day, when they request a party’s ballot.[18]
  • Oklahoma: Parties decide who may vote, so an unaffiliated voter must be authorized by a party in order to vote in the primary.[19]
  • Rhode Island: Unaffiliated voters may vote in a party’s primary, but they will then be considered affiliated with that party. In order to disaffiliate, they must file a “Change of Party Designation” form.[20]
  • South Dakota: Parties decide who may vote. Registered Democrats and unaffiliated voters may vote in the Democratic primary. Only registered Republicans may vote in the Republican primary.[21]
  • Texas: Voters do not have to register with a party. At the primary, they may choose which party primary ballot to vote on, but in order to vote they must sign a pledge declaring they will not vote in another party’s primary or convention that year.[4][22]
  • Utah: Parties decide who may vote. Registered Democrats and unaffiliated voters may vote in the Democratic primary. Only registered Republicans can vote in the Republican primary.[23]
  • West Virginia: Parties decide who may vote. Both parties allow unaffiliated voters to vote in their primaries.[4]

ballotpedia.org/Closed_primary
 

Schedule of primaries and caucuses[edit]

As of December 2015, the tentative schedule for 2016 is as follows:[106][107]

Date[108][109] State/
territory
Filing Date Election Type[110][a] Open or
Closed[106]
Pledged/
Unpledged/
Total
Delegates[111][b]
Delegate
breakdown
Allocation
method
February 1, 2016 Iowa Caucuses Closed 30 / 0 / 30 12 district
15 at-large
3 RNC
Proportional, no threshold–At-large and district delegates are allocated based on the statewide vote.
February 9, 2016 New Hampshire 11/20/2015 Primary Mixed 20 / 3 / 23 6 district
14 at-large
3 RNC
Proportional, 10% threshold–At-large and district delegates are allocated based on the statewide vote.
February 20, 2016 South Carolina 9/30/2015 Primary Open 50 / 0 / 50 21 district
26 at-large
3 RNC
Winner-take-all for at-large delegates by statewide vote
winner-take-all for district delegates by district vote.
February 23, 2016 Nevada 1/9/2016 Caucuses Closed 30 / 0 / 30 12 district
15 at-large
3 RNC
Proportional, no threshold–At-large and district delegates are allocated based on the statewide vote.
March 1, 2016 Alabama 11/6/2015 Primary Open 47 / 3 / 50 21 district
26 at-large
3 RNC
Proportional, 20% threshold–At-large delegates: If a candidate wins more than 50% of the statewide vote, he or she is awarded all of the state’s at-large delegates.
District delegates: If a candidate wins more than 50% of the vote in a district, he or she is awarded all of the district’s delegates.
Alaska 1/28/2016 Caucuses Closed 25 / 3 / 28 3 district
22 at-large
3 RNC
Proportional, 13% threshold–At-large and district delegates are allocated based on the statewide vote.
Arkansas 11/9/2015 Primary Open 37 / 3 / 40 12 district
25 at-large
3 RNC
At-large delegates: Proportional, 15% threshold–District delegates: Proportional, no threshold–At-large delegates: All candidates who win at least 15% of the statewide vote are allocated one delegate. If one candidate wins more than 50% of the vote, he or she is awarded the remaining delegates. If no candidate wins more than 50% of the vote, the remaining delegates are allocated proportionally.
District delegates: If a candidate wins more than 50% of the vote in a district, he or she is awarded all of that district’s delegates. Otherwise, the highest vote-getter wins two of the district’s delegates
one delegate is awarded the second-place candidate.
Colorado Caucuses Closed 34 / 3 / 37 21 district
13 at-large
3 RNC
No preference poll. Delegates are bound according to the preferred presidential candidate on their intent-to-run forms when they are elected as delegates at state or district conventions.
Georgia Primary Open 76 / 0 / 76 42 district
31 at-large
3 RNC
At-large delegates: Proportional, 20% threshold–
District delegates: Proportional, no threshold–At-large and district delegates are allocated on a winner-take-all basis if a candidate wins more than 50% of the statewide vote.
If a candidate wins more than 50% of the vote in a district, he or she receives all of that district’s delegates. Otherwise, the highest vote-getter wins two of the district’s delegates
one delegate is awarded to the second-place candidate.
Massachusetts 1/4/2016 Primary Mixed 39 / 3 / 42 27 district
12 at-large
3 RNC
Proportional, 5% threshold–Both at-large and district delegates are allocated based on the statewide vote.
Minnesota Caucuses Open 35 / 3 / 38 24 district
11 at-large
3 RNC
Proportional, 10% threshold–If a candidate wins more than 85% of the statewide vote, he or she is awarded all at-large and district delegates.
North Dakota Caucuses Closed 25 / 3 / 28 3 district
22 at-large
3 RNC
No preference poll. Delegates are bound according to the preferred presidential candidate on their intent-to-run forms when they are elected as delegates at state or district conventions.
Oklahoma 12/9/2015 Primary Closed 40 / 3 / 43 15 district
25 at-large
3 RNC
Proportional, 15% threshold–At-large delegates are allocated on a winner-take-all basis if a candidate wins more than 50% of the statewide vote.
If only one candidate in a district wins more than 15% of the vote, he or she is awarded all of the district’s delegates. If two candidates win more than 15% in a district, the first-place finisher is awarded two of the district’s three delegates and the second-place finisher is awarded one. If three or more candidates receive more than 15% of the vote in a district, each of the top three candidates is awarded one delegate a piece. If one candidate receives more than 50% of the vote in a district, he or she is awarded all of the district’s delegates.
Tennessee 12/1/2015 Primary Open 55 / 3 / 58 27 district
28 at-large
3 RNC
Proportional, 20% threshold–If a candidate receives more than 66% of the statewide vote, he or she is awarded all of the state’s at-large delegates.
If a candidate receives more than 66% of the vote in a district, he or she is awarded all of the district’s delegates. If the winning candidate in a district receives between 20% and 66% of the vote in the district, he or she is awarded two of the district’s three delegates
the second-place finisher is awarded one delegate (if the second-place finisher wins less than 20% of the vote, then the first-place finisher is awarded all of the district’s delegates). If no candidate wins more than 20% of the vote, the top three finishers each are awarded one delegate.
Texas 12/14/2015 Primary Open 152 / 3 / 155 108 district
44 at-large
3 RNC
Proportional, 20% threshold–If a candidate wins more than 50% of the statewide vote, he or she is awarded all of the state’s at-large delegates. If a candidate wins more than 50% of the vote in a district, he or she is awarded all of the district’s delegates.
Vermont 1/11/2016 Primary Open 16 / 0 / 16 3 district
10 at-large
3 RNC
Proportional, 20% threshold–At-large and district delegates are allocated based on the statewide vote.
If a candidate wins more than 50% of the statewide vote, he or she is awarded all of the state’s delegates.
Virginia 12/10/2015 Primary Open 46 / 3 / 49 33 district
13 at-large
3 RNC
Proportional, no threshold–At-large and district delegates are allocated based on the statewide vote.
Wyoming Caucuses Closed 26 / 3 / 29 3 district
23 at-large
3 RNC
No preference poll. Delegates are bound according to the preferred presidential candidate on their intent-to-run forms when they are elected as delegates at state or district conventions.
March 5, 2016 Kansas 1/20/2016 Caucuses Closed 40 / 0 / 40 12 district
25 at-large
3 RNC
Proportional, 10% threshold
Kentucky 1/7/2016 Caucuses Closed 42 / 3 / 45 18 district
24 at-large
3 RNC
Proprotional, 5% threshold–At-large and district delegates are allocated based on the statewide vote.
Louisiana 12/4/2015 Primary Closed 44 / 3 / 47 18 district
26 at-large
3 RNC
At-large: Proportional, 20% threshold–District: Proportional, no threshold
Maine 12/15/2015 Caucuses Closed 20 / 3 / 23 6 district
14 at-large
3 RNC
Proportional, 10% threshold–At-large and district delegates are allocated based on the statewide vote. At-large and district delegates are allocated on a winner-take-all basis if a candidate receives more than 50% of the statewide vote.
March 6, 2016 Puerto Rico 1/13/2016 Primary Open 20 / 3 / 23 3 RNC
20 at-large
Proportional, 20% threshold–If a candidate wins more than 50% of the vote, he or she is allocated all of the territory’s at-large delegates.
March 8, 2016 Hawaii 2/23/2016 Caucuses Closed 16 / 3 / 19 6 district
10 at-large
3 RNC
Proportional, no threshold
Idaho 12/9/2015 Primary Closed 29 / 3 / 32 6 district
23 at-large
3 RNC
Proportional, 20% threshold–At-large and district delegates are allocated based on the statewide vote. At-large and district delegates are allocated on a winner-take-all basis if a candidate wins more than 50% of the statewide vote.
Michigan 12/11/2015 Primary Open 56 / 3 / 59 42 district
14 at-large
3 RNC
Proportional, 15% threshold–Both at-large and district delegates are allocated based on the statewide vote
all at-large and district delegates are allocated on a winner-take-all basis if a candidate wins more than 50% of the statewide vote.
Mississippi 1/15/2016 Primary Open 37 / 3 / 40 12 district
25 at-large
3 RNC
At-large delegates: Proportional, 15% threshold–District delegates: Proportional, no threshold–The candidate who wins the greatest number of votes in a district is awarded two of that district’s delegates
the second-place finisher receives one delegate. If a candidate wins more than 50% of the vote in a district, he or she receives all three of that district’s delegates.
March 12, 2016 Guam Territorial convention Closed 6 / 3 / 9 3 RNC
6 at-large
No preference poll. Delegates are bound according to the preferred presidential candidate on their intent-to-run forms when they are elected as delegates at state or district conventions.
Washington, D.C. 1/4/2016 Convention Closed 16 / 3 / 19 3 RNC
16 at-large
Proportional, 15% threshold
March 15, 2016 Florida 11/30/2015 Primary Closed 99 / 0 / 99 81 district
15 at-large
3 RNC
Winner-take-all–At-large and district delegates are both allocated based on the statewide vote.
Illinois 1/6/2016 Primary Open 66 / 3 / 69 54 district
12 at-large
3 RNC
At-large delegates: Winner-take-all–District delegates: Directly elected–District delegates are elected directly at the primary
district delegates are bound to a candidate for whom they declare themselves.
Missouri 12/29/2015 Primary Open 49 / 3 / 52 24 district
25 at-large
3 RNC
Proportional, no threshold–The winner candidate in each district is awarded five delegates (three district delegates and two at-alrge delegates). The remaining at-large delegates are awarded to the statewide winner. If a candidate receives more than 50% of the statewide vote, he or she is awarded all of the state’s at-large and district delegates.
North Carolina 12/21/2015 Primary Mixed 72 / 0 / 72 39 district
30 at-large
3 RNC
Proportional, no threshold–At-large and district delegates are allocated based on the statewide vote.
Northern Mariana Islands Caucuses Closed 6 / 3 / 9 3 RNC
6 at-large
Winner-take-all
Ohio 12/16/2015 Primary Mixed 63 / 3 / 66 48 district
15 at-large
3 RNC
Winner-take-all–At-large and district delegates are both allocated based on the statewide vote.
March 19, 2016 Virgin Islands Caucuses Open 6 / 3 / 9 3 RNC
6 at-large
Winner-take-all
March 22, 2016 American Samoa Territorial convention Open 6 / 3 / 9 3 RNC
6 at-large
No preference poll. Delegates are bound according to the preferred presidential candidate on their intent-to-run forms when they are elected as delegates at state or district conventions.
Arizona 12/14/2015 Primary Open 58 / 0 / 58 27 district
28 at-large
3 RNC
Winner-take-all–At-large and district delegates are both allocated based on the statewide vote.
Utah Caucuses Closed 40 / 0 / 40 12 district
25 at-large
3 RNC
Proportional, 15% threshold–At-large and district delegates are allocated based on the statewide vote.
If a candidate wins more than 50% of the statewide vote, he or she is awarded all of the state’s delegates.
April 5, 2016 Wisconsin 1/26/2016 Primary Open 42 / 0 / 42 24 district
15 at-large
3 RNC
Winner-take-all for at-large delegates by statewide vote
winner-take-all for district delegates by district vote.
April 19, 2016 New York 2/4/2016 Primary Closed 92 / 3 / 95 81 district
11 at-large
3 RNC
Proportional, 20% threshold–At-large delegates are allocated on a winner-take-all basis if a candidate wins more than 50% of the statewide vote.
The highest vote-getter in a district receives two of the district’s three delegates
the second-place finisher receives one delegate. If a candidate wins more than 50% of the vote in a district, he or she is awarded all of the district’s delegates.
April 26, 2016 Connecticut 3/4/2016 Primary Closed 25 / 3 / 28 3 district
10 at-large
3 RNC
At-large delegates: Proportional, 20% threshold–District delegates: Winner-take-all–At-large and district delegates are allocated on a winner-take-all basis if a candidate wins more than 50% of the statewide vote.
Delaware 2/26/2016 Primary Closed 16 / 0 / 16 3 district
10 at-large
3 RNC
Winner-take-all for at-large delegates by statewide vote
winner-take-all for district delegates by district vote.
Maryland 2/3/2016 Primary Closed 38 / 0 / 38 24 district
11 at-large
3 RNC
Winner-take-all for at-large delegates by statewide vote
winner-take-all for district delegates by district vote.
Pennsylvania 2/16/2016 Primary Closed 68 / 3 / 71 54 district
14 at-large
3 RNC
At-large delegates: Winner-take-all–District delegates: Directly elected–District delegates are directly elected as unbound delegates.
Rhode Island 1/23/2016 Primary Mixed 16 / 3 / 19 6 district
10 at-large
3 RNC
Proportional, 10% threshold–If three candidates each win more than 10% of the vote in a district, each is awarded one of the district’s three delegates. If a candidate wins more than 67% of the vote in a district, he or she is awarded all of the district’s delegates.
May 3, 2016 Indiana 2/5/2016 Primary Open 54 / 3 / 57 27 district
27 at-large
3 RNC
Winner-take-all for at-large delegates by statewide vote
winner-take-all for district delegates by district vote.
May 10, 2016 Nebraska 3/11/2016 Primary Closed 33 / 3 / 36 9 district
24 at-large
3 RNC
Winner-take-all–At-large and district delegates are both allocated based on the statewide vote.
West Virginia 1/30/2016 Primary Mixed 31 / 3 / 34 9 district
22 at-large
3 RNC
Direct election
May 17, 2016 Oregon 3/8/2016 Primary Closed 25 / 3 / 28 15 district
10 at-large
3 RNC
Proportional, no threshold–At-large and district delegates are allocated based on the statewide vote.
May 24, 2016 Washington 3/10/2016 Primary Closed 41 / 3 / 44 30 district
11 at-large
3 RNC
Proportional, 20% threshold–District delegates: If a candidate wins more than 50% of the vote in a district, he or she is awarded all of the district’s delegates
also, if only one candidate wins more than 20% of the vote in a district, he or she is awarded all of the district’s delegates.
June 7, 2016 California 3/26/2016 Primary Closed 169 / 3 / 172 159 district
10 at-large
3 RNC
Winner-take-all for at-large delegates by statewide vote
winner-take-all for district delegates by district vote.
Montana 3/14/2016 Primary Open 24 / 3 / 27 3 district
21 at-large
3 RNC
Winner-take-all–At-large and district delegates are both allocated based on the statewide vote.
New Jersey 4/4/2016 Primary Mixed 51 / 0 / 51 36 district
12 at-large
3 RNC
Winner-take-all–At-large and district delegates are both allocated based on the statewide vote.
New Mexico 2/2/2016 Primary Closed 21 / 3 / 24 9 district
12 at-large
3 RNC
Proportional, 15% threshold–At-large and district delegates are allocated based on the statewide vote.
South Dakota 3/29/2016 Primary Closed 26 / 3 / 29 3 district
23 at-large
3 RNC
Winner-take-all–At-large and district delegates are both allocated based on the statewide vote.

en.wikipedia.org/wiki/Republican_Party_presidential_primaries,_2016#Schedule_of_primaries_and_caucuses
AC