No matter which of the Democratic candidates you support, if you want to vote for them in the Democratic Primary, here’s what you need to know.
First and foremost, check that your name and current address is correctly entered on your state electoral roll. Millions of names are being purged from state electoral rolls, particularly in red states. You do not want to find out that you are among those erased when it’s too late to re-enroll for the primary or, worse, the general election in November 2016.
This message needs to be broadcast nationwide. If you have any ideas how that can be accomplished, please share them. If you have links to any Democratic campaign, PAC or group, please use your association to persuade them that this message must be publicized as a matter of urgency. Not only will they be performing a public service but in doing so they will also be educating the American public as to the underhanded tactics of the Republican Party without directly accusing them.
I would also recommend setting up a system or site where those whose names have been purged, can report it. This will provide Democrats with solid evidence of widespread purging, show which states are the worst and which groups are being targeted most. It may also be able to provide free legal advice to those who have been wrongly accused of voter fraud by Republican groups like the grossly misnamed Ohio Voter Integrity Project and True the Vote.
In order to vote in the Democratic Primary, it is important to note that states vary in their requirements. In general there are three categories: open, closed and semi-closed. The other mentioned on this map refers to top-two and the Louisiana system. While these are used in Congressinal primaries, neither are used in presidential primaries.

Click anywhere on the map for an expanded image.
In many, though not all, open primary states voters do not indicate partisan affiliation when they register to vote. In this category, voters of any affiliation may vote in the primaries of any party they choose. Although they are restricted to voting in only one party's primary, that prohibition can be difficult to enforce in the event a party has a primary runoff election. Remember at all times that republicans are out to exclude Democratic voters on any grounds whatsoever so,to be on the safe side, stay within the law and vote in one primary only!
In a closed primary, only voters registered with a given party can vote in that party's primary. States with closed primaries include party affiliation in voter. In some states, parties may have the option to invite unaffiliated voters to participate in the closed primary. Generally, unaffiliated voters will not be permitted to participate in the closed primary unless they choose to give up their independent status.
In a semi-closed primary, unaffiliated voters may choose which party primary to vote in, while voters registered with a party may only vote in that party's primary. People who align with a given party may theoretically still vote in another party's primary if they are registered as independent, undeclared or unaffiliated.
Those in the other category – California, Louisiana and Washington – employ either a top-two system or a Cajun Primary as the Louisiana system is nicknamed, for Congressional and state primaries. However, these systems do not apply to presidential primaries.
Summary
In order to vote in your Democratic Primary, you must be registered as a Democrat (closed primary states) or as a Democratic / Undeclared / Unaffiliated / Independent (semi-closed primary states). For more specific information, click on
BallotPedia, go to the list of states in the box on the right, and click on your state.
Important Dates and Information for Presidential Primaries
State |
Registration Deadline |
Format |
Register As |
Primary Date |
Alabama |
Feb 16, 2016 |
Open |
voter |
March 1 |
Alaska |
|
Closed Caucus |
Democrat |
March 26 |
Arizona |
|
Closed |
Democrat |
March 22 |
Arkansas |
Feb 1, 2016 |
open |
voter |
March 1 |
California |
May 23, 2016 |
Semi-Closed |
Dem/Undeclared |
June 7 |
Colorado |
Feb 2, 2016 |
Closed Caucus |
Democrat |
March 1 |
Connecticut |
Apr 21, 2016 |
Closed |
Democrat |
April 26 |
Delaware |
Apr 2, 2016 |
Closed |
Democrat |
April 26 |
Florida |
Feb 16, 2016 |
Closed |
Democrat |
March 15 |
Georgia |
Feb 1, 2016 |
Open |
voter |
March 1 |
Hawaii |
|
Closed Caucus |
declare at ballot |
March 26 |
Idaho |
Feb 12, 2016 |
Semi-Closed |
Dem/Undeclared |
March 8 |
Illinois |
Mar 8, 2016 |
Semi-Closed |
declare at ballot |
March 15 |
Indiana |
Apr 4, 2016 |
Open |
voter |
May 3 |
Iowa |
|
Semi-Closed |
declare at ballot |
Feb 1 |
Kansas |
|
Closed Caucus |
Democrat |
March 5 |
Kentucky |
Apr 18, 2016 |
Closed |
Democrat |
May 17 |
Louisiana |
Feb 3, 2016 |
Closed |
Democrat |
March 5 |
Maine |
|
Closed Caucus |
Democrat |
March 6 |
Maryland |
Apr 5, 2016 |
Closed |
Democrat |
April 26 |
Massachusetts |
Feb 10, 2016 |
Semi-Closed |
Dem/Undeclared |
March 1 |
Michigan |
Feb 9, 2016 |
Open |
voter |
March 8 |
Minnesota |
|
Open |
voter |
March 1 |
Mississippi |
Feb 6, 2016 |
Open |
voter |
March 8 |
Missouri |
Feb 17, 2016 |
Open |
voter |
March 15 |
Montana |
May 9, 2016 |
Open |
voter |
June 7 |
Nebraska |
Apr 22, 2016 |
Closed Caucus |
Democrat |
May 10 |
Nevada |
|
Closed Caucus |
Democrat |
Feb 20 |
New Hampshire |
Jan 31, 2016 |
Semi-Closed |
Dem/Undeclared |
Feb 9 |
New Jersey |
May 17, 2016 |
Closed |
Democrat |
June 7 |
New Mexico |
May 10, 2016 |
Closed |
Democrat |
June 7 |
New York |
Oct 9, 2015 |
Closed |
Democrat |
April 19 |
North Carolina |
Feb 4, 2016 |
Semi-Closed |
Dem/Undeclared |
March 1 |
North Dakota |
none required |
Open |
Democrat |
June 14 |
Ohio |
Feb 16, 2016 |
Semi-Closed |
declare at ballot |
March 15 |
Oklahoma |
Feb 5, 2016 |
Semi-Closed |
Dem/Undeclared |
March 1 |
Oregan |
Apr 26, 2016 |
Closed |
Democrat |
May 17 |
Pennsylvania |
Mar 28, 2016 |
Closed |
Democrat |
April 26 |
Rhode Island |
Mar 28, 2016 |
Semi-Closed |
Dem/Undeclared |
April 26 |
South Carolina |
Jan 27, 2016 |
Open |
voter |
Feb 27 |
South Dakota |
May 23, 2016 |
Semi-Closed |
Dem/Undeclared |
June 7 |
Tennessee |
Feb 1, 2016 |
Open |
voter |
March 1 |
Texas |
Feb 8, 2016 |
Open |
voter |
March 1 |
Utah |
Mar 15, 2016 |
Semi-Closed |
Dem/Undeclared |
March 22 |
Vermont |
Feb 24, 2016 |
Open |
voter |
March 1 |
Virginia |
Feb 8, 2016 |
Open |
voter |
March 1 |
Washington |
May 16, 2016 |
Open Caucus |
voter |
May 24 |
West Virginia |
Apr 19, 2016 |
Semi-Closed |
Dem/Undeclared |
May 10 |
Wisconsin |
Apr 1, 2016 |
Open |
voter |
April 5 |
Wyoming |
|
Closed Caucus |
Democrat |
April 9 |
Please mention corrections and additional information in comments and I will amend the diary accordingly.
For my 100th diary, I wanted to choose something informative and useful. I hope you find this serves the purpose. (◕‿◕)
References:
BallotPedia
Fair Vote.org
U.S. Vote Foundation
Primary Elections in California