Dates of PRESIDENTIAL PRIMARIES
re: selection and/or allocation/distribution of Delegates
to Major Party National Conventions

The table on this page is a "work in progress". Please bear with us as we continue to collect the necessary historical data to add to it as time goes along.

 
 

The main table below is, simply, a compilation of the dates on which States (or Major Parties- where allowed such discretion under State law) scheduled a PRESIDENTIAL Primary (a Primary Election, as opposed to the indirect Primary [that which we, nowadays, would call either Caucuses or Mass Meetings]) utilized as at least an adjunct to the distribution of a Party's National Convention delegates pledged to the various and sundry contenders for that Party's Presidential Nomination every four years). Neither the dates of first-tier Caucuses nor those of later-tier Conventions are included in the main table on this page, nor is there any attempt in this table to indicate which Presidential Primary Type might have been used in a given Presidential Primary listed therein.

Although Presidential Primaries were first held as early as 1904, the main table below begins with the Presidential Primaries held in the year 1912, as this was the first Presidential Election cycle in which these Primaries figured prominently in media coverage of the nomination races in both Major Parties (though, admittedly, more so as regarded the race for the Republican Presidential Nomination that particular year); in addition: by that same year of 1912, a significant number of States (including a number of those with comparatively large populations and, therefore, comparatively large delegations to each Party's National Convention) were holding some form of Presidential Primary. Thus, it makes most sense to begin this table with that watershed political year.

In order to allow the user of this table to more easily discern how each Presidential Primary in a given year might have fit into the overall sequence of events of that year's Presidential Election "cycle", the dates of the General Election for each PRESIDENTIAL ELECTION YEAR are provided at each end of every row in this table; in addition, the dates of the National Party Conventions (along with the cities in which these were held) are also provided: the Conventions of the DEMOCRATS listed towards the left end of each row, the REPUBLICAN Conventions towards the right (of course the Democrats are to the left and the Republicans are to the right!-- besides, who says a database can't have a sense of humor?)

The column, in the table below, under the name of each STATE with the heading 'STATE Primary date?' simply answers the question as to whether or not a given PRESIDENTIAL Primary was held on the same day as that same State's Primary Election re: nominations to Statewide and/or Federal offices in a given PRESIDENTIAL ELECTION YEAR: where the answer to this question might be 'Yes', this is boldfaced in order to make it easier for the user of this data to see, at a glance, when Presidential Primaries and State Direct Primaries happened to coincide. Where the word 'none' appears in a column headed 'STATE Primary date?', it merely indicates that the State in question was holding a Presidential Primary before that State had ever formally authorized a State Primary for Statewide and/or Federal office.

NOTE: Although the dates of first-tier Caucuses (as opposed to Presidential Primary Elections) re: the Major Party Presidential Nominations are not included in the table below, there seems to be more than enough interest in the dates of Iowa's "First in the Nation" Caucuses since these first emerged as such back in 1972 (as the IOWA Caucuses have, long since, become seen as the true beginning of the quadrennial Presidential Nomination [pre-Convention Primary/Caucus] "season" to here warrant inclusion of the following:

 
 
YEAR IOWA Caucus date days before the NEW HAMPSHIRE Presidential Primary
1972 24 Jan 43
1976 19 Jan 36
1980 21 Jan 36
1984 20 Feb 8
1988 8 Feb 8
1992 10 Feb 8
1996 12 Feb 8
2000 24 Jan 8
2004 19 Jan 8
2008 3 Jan 5
2012 3 Jan 7
 
 

NOTE: an 'x' next to the date of a Presidential Primary in the table below indicates that there is further information related to that Presidential Primary in the notes beneath the table.

 
 
PRESIDENTIAL ELECTION YEAR General Election DEMOCRATIC National Convention ALABAMA ALASKA ARIZONA ARKANSAS CALIFORNIA COLORADO CONNECTICUT DELAWARE FLORIDA GEORGIA HAWAII IDAHO ILLINOIS INDIANA IOWA KANSAS KENTUCKY LOUISIANA MAINE MARYLAND MASSACHUSETTS MICHIGAN MINNESOTA MISSISSIPPI MISSOURI MONTANA NEBRASKA NEVADA NEW HAMPSHIRE NEW JERSEY NEW MEXICO NEW YORK NORTH CAROLINA NORTH DAKOTA OHIO OKLAHOMA OREGON PENNSYLVANIA RHODE ISLAND SOUTH CAROLINA SOUTH DAKOTA TENNESSEE TEXAS UTAH VERMONT VIRGINIA WASHINGTON WEST VIRGINIA WISCONSIN WYOMING REPUBLICAN National Convention General Election PRESIDENTIAL ELECTION YEAR
Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date?
1912 5 Nov 25 Jun-2 Jul
Baltimore
-- -- -- -- -- -- -- -- 14 May no -- -- -- -- -- -- -- -- -- -- 9 Apr no -- -- -- -- -- -- -- -- -- -- -- -- 6 May Yes 30 Apr no -- -- -- -- -- -- -- -- -- -- 19 Apr Yes -- -- -- -- 28 May no -- -- 26 Mar none -- -- 19 Mar no 21 May no -- -- 19 Apr Yes 13 Apr none -- -- -- -- 4 Jun Yes -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2 Apr no -- -- 18-22 Jun
Chicago
5 Nov 1912
1916 7 Nov 14-16 Jun
St. Louis
-- -- -- -- -- -- -- -- 2 May no -- -- -- -- -- -- 6 Jun Yes -- -- -- -- -- -- 11 Apr no 7 May Yes -- -- -- -- -- -- -- -- -- -- 1 May Yes 25 Apr no 3 Apr no 14 Mar no -- -- -- -- 21 Apr no 18 Apr Yes -- -- 14 Mar no 25 Apr no -- -- 4 Apr no -- -- 21 Mar no 25 Apr no -- -- 19 May Yes 16 May Yes -- -- -- -- 23 May Yes -- -- -- -- -- -- 16 May no -- -- -- -- 6 Jun Yes 4 Apr no -- -- 7-10 Jun
Chicago
7 Nov 1916
1920 2 Nov 28 Jun-6 Jul
San Francisco
-- -- -- -- -- -- -- -- 4 May no -- -- -- -- -- -- 8 Jun Yes 17 Mar no -- -- -- -- 13 Apr no 4 May Yes -- -- -- -- -- -- -- -- -- -- 3 May Yes 27 Apr no 5 Apr no -- -- -- -- -- -- 23 Apr no 20 Apr Yes -- -- 9 Mar no 27 Apr no -- -- 6 Apr no 5 Jun Yes 16 Mar no 27 Apr no -- -- 21 May Yes 18 May Yes -- -- -- -- 23 Mar Yes -- -- -- -- -- -- 18 May no -- -- -- -- 25 May Yes 6 Apr no -- -- 8-12 Jun
Chicago
2 Nov 1920
1924 4 Nov 24 Jun-9 Jul
New York
6 May Yes -- -- -- -- -- -- 6 May no -- -- -- -- -- -- 3 Jun Yes 19 Mar no -- -- -- -- 8 Apr Yes 6 May Yes -- -- -- -- -- -- -- -- -- -- 5 May Yes 29 Apr no 7 Apr no -- -- -- -- -- -- 28 May no 8 Apr no -- -- 11 Mar no 22 Apr no -- -- 1 Apr no -- -- 18 Mar no 29 Apr no -- -- 16 May Yes 22 Apr Yes -- -- -- -- 25 Mar Yes -- -- -- -- -- -- -- -- -- -- -- -- 27 May Yes 1 Apr no -- -- 10-12 Jun
Cleveland
4 Nov 1924
1928 6 Nov 26-29 Jun
Houston
8 May Yes -- -- -- -- -- -- 1 May no -- -- -- -- -- -- 5 Jun Yes -- -- -- -- -- -- 10 Apr Yes 8 May Yes -- -- -- -- -- -- -- -- -- -- 7 May Yes 24 Apr no 2 Apr no -- -- -- -- -- -- -- -- 10 Apr Yes -- -- 13 Mar no 15 May Yes -- -- 3 Apr no -- -- 20 Mar no 24 Apr no -- -- 18 May Yes 24 Apr Yes -- -- -- -- 22 May Yes -- -- -- -- -- -- -- -- -- -- -- -- 29 May Yes 3 Apr no -- -- 12-15 Jun
Kansas City
6 Nov 1928
1932 8 Nov 27 Jun-2 Jul
Chicago
3 May Yes -- -- -- -- -- -- 3 May no -- -- -- -- -- -- 7 Jun Yes 23 Mar no -- -- -- -- 12 Apr Yes -- -- -- -- -- -- -- -- -- -- -- -- 2 May Yes 26 Apr no -- -- -- -- -- -- -- -- -- -- 12 Apr Yes -- -- 8 Mar no 17 May Yes -- -- 5 Apr no -- -- -- -- 10 May Yes -- -- 20 May Yes 26 Apr Yes -- -- -- -- 3 May Yes -- -- -- -- -- -- -- -- -- -- -- -- 10 May Yes 5 Apr no -- -- 14-16 Jun
Chicago
8 Nov 1932
1936 3 Nov 23-27 Jun
Philadelphia
-- -- -- -- -- -- -- -- 5 May no -- -- -- -- -- -- 9 Jun no -- -- -- -- -- -- 14 Apr Yes -- -- -- -- -- -- -- -- -- -- -- -- 4 May Yes 28 Apr no -- -- -- -- -- -- -- -- -- -- 14 Apr Yes -- -- 10 Mar no 19 May Yes -- -- 2 Apr no -- -- -- -- 12 May Yes -- -- 15 May Yes 28 Apr Yes -- -- -- -- 5 May Yes -- -- -- -- -- -- -- -- -- -- -- -- 12 May Yes 7 Apr no -- -- 9-12 Jun
Cleveland
3 Nov 1936
1940 5 Nov 15-18 Jul
Chicago
7 May Yes -- -- -- -- -- -- 7 May no -- -- -- -- -- -- 14 May no -- -- -- -- -- -- 9 Apr Yes -- -- -- -- -- -- -- -- -- -- -- -- 6 May Yes 30 Apr no -- -- -- -- -- -- -- -- -- -- 9 Apr Yes -- -- 12 Mar no 21 May Yes -- -- 2 Apr no -- -- -- -- 14 May Yes -- -- 17 May Yes 23 Apr Yes -- -- -- -- 7 May Yes -- -- -- -- -- -- -- -- -- -- -- -- 14 May Yes 2 Apr no -- -- 24-28 Jun
Philadelphia
5 Nov 1940
1944 7 Nov 19-21 Jul
Chicago
2 May Yes -- -- -- -- -- -- 16 May Yes -- -- -- -- -- -- 2 May Yes -- -- -- -- -- -- 11 Apr Yes -- -- -- -- -- -- -- -- -- -- -- -- 1 May Yes 25 Apr no -- -- -- -- -- -- -- -- -- -- 11 Apr Yes -- -- 14 Mar no 16 May Yes -- -- 28 Mar no -- -- -- -- 9 May Yes -- -- 19 May Yes 25 Apr Yes -- -- -- -- 2 May Yes -- -- -- -- -- -- -- -- -- -- -- -- 9 May Yes 4 Apr no -- -- 26-28 Jun
Chicago
7 Nov 1944
1948 2 Nov 12-14 Jul
Philadelphia
4 May Yes -- -- -- -- -- -- 1 Jun Yes -- -- -- -- -- -- 4 May Yes -- -- -- -- -- -- 13 Apr Yes -- -- -- -- -- -- -- -- -- -- -- -- 3 May Yes 27 Apr no -- -- -- -- -- -- -- -- -- -- 13 Apr Yes -- -- 9 Mar no 20 Apr Yes -- -- 6 Apr no -- -- -- -- 4 May Yes -- -- 21 May Yes 27 Apr Yes -- -- -- -- 1 Jun Yes -- -- -- -- -- -- -- -- -- -- -- -- 11 May Yes 6 Apr no -- -- 21-25 Jun
Philadelphia
2 Nov 1948
1952 4 Nov 21-26 Jul
Chicago
6 May Yes -- -- -- -- -- -- 3 Jun Yes -- -- -- -- -- -- x6 May Yes -- -- -- -- -- -- 8 Apr Yes -- -- -- -- -- -- -- -- -- -- -- -- x5 May Yes 29 Apr no -- -- 18 Mar no -- -- -- -- -- -- 1 Apr Yes -- -- 11 Mar no 15 Apr Yes -- -- 22 Apr no -- -- -- -- 6 May Yes -- -- 16 May Yes 22 Apr Yes -- -- -- -- 3 Jun Yes -- -- -- -- -- -- -- -- -- -- -- -- 13 May Yes 1 Apr no -- -- 7-11 Jul
Chicago
4 Nov 1952
1956 6 Nov 13-17 Aug
Chicago
1 May Yes -- -- -- -- -- -- 5 Jun Yes -- -- -- -- -- -- 29 May Runoff -- -- -- -- -- -- 10 Apr Yes 8 May Yes -- -- -- -- -- -- -- -- -- -- 7 May Yes 24 Apr no -- -- 20 Mar no -- -- -- -- 5 Jun Yes 15 May Yes -- -- 13 Mar no 17 Apr Yes -- -- 5 Jun Yes -- -- -- -- 8 May Yes -- -- 18 May Yes 24 Apr Yes -- -- -- -- 5 Jun Yes -- -- -- -- -- -- -- -- -- -- -- -- 8 May Yes 3 Apr no -- -- 20-23 Aug
San Francisco
6 Nov 1956
1960 8 Nov 11-15 Jul
Los Angeles
3 May Yes -- -- -- -- -- -- 7 Jun Yes -- -- -- -- -- -- 24 May Runoff -- -- -- -- -- -- 12 Apr Yes 3 May Yes -- -- -- -- -- -- -- -- -- -- x17 May Yes 26 Apr no -- -- -- -- -- -- -- -- -- -- 10 May Yes -- -- 8 Mar no 19 Apr Yes -- -- 7 Jun Yes -- -- -- -- 3 May Yes -- -- 20 May Yes 26 Apr Yes -- -- -- -- 7 Jun Yes -- -- -- -- -- -- -- -- -- -- -- -- 10 May Yes 5 Apr no -- -- 25-28 Jul
Chicago
8 Nov 1960
1964 3 Nov 24-27 Aug
Atlantic City
5 May Yes -- -- -- -- -- -- 2 Jun Yes -- -- -- -- -- -- 26 May Runoff -- -- -- -- -- -- 14 Apr Yes 5 May Yes -- -- -- -- -- -- -- -- -- -- 19 May Yes 28 Apr no -- -- -- -- -- -- -- -- -- -- 12 May Yes -- -- 10 Mar no 21 Apr Yes -- -- 2 Jun Yes -- -- -- -- 5 May Yes -- -- 15 May Yes 28 Apr Yes -- -- -- -- 2 Jun Yes -- -- x2 May Yes -- -- -- -- -- -- -- -- 12 May Yes 7 Apr no -- -- 13-16 Jul
San Francisco
3 Nov 1964
1968 5 Nov 26-29 Aug
Chicago
7 May Yes -- -- -- -- -- -- 4 Jun Yes -- -- -- -- -- -- 28 May Runoff -- -- -- -- -- -- 11 Jun Yes 7 May Yes -- -- -- -- -- -- -- -- -- -- -- -- 30 Apr no -- -- -- -- -- -- -- -- -- -- 14 May Yes -- -- 12 Mar no 4 Jun Yes -- -- 18 Jun Yes -- -- -- -- 7 May Yes -- -- 28 May Yes 23 Apr Yes -- -- -- -- 4 Jun Yes -- -- -- -- -- -- -- -- -- -- -- -- 14 May Yes 2 Apr no -- -- 5-8 Aug
Miami Beach
5 Nov 1968
1972 7 Nov 10-13 Jul
Miami Beach
2 May Yes -- -- -- -- -- -- 6 Jun Yes -- -- -- -- -- -- 14 Mar no -- -- -- -- -- -- 21 Mar Yes 2 May Yes -- -- -- -- -- -- -- -- -- -- 16 May Yes 25 Apr no 16 May no -- -- -- -- -- -- -- -- 9 May Yes -- -- 7 Mar no 6 Jun Yes 6 Jun Yes 20 Jun Yes 6 May Yes -- -- 2 May Yes -- -- 23 May Yes 25 Apr Yes 23 May no -- -- 6 Jun Yes 4 May no -- -- -- -- -- -- -- -- -- -- 9 May Yes 4 Apr no -- -- 21-23 Aug
Miami Beach
7 Nov 1972
1976 2 Nov 12-15 Jul
New York
4 May Yes -- -- -- -- 25 May Yes 8 Jun Yes -- -- -- -- -- -- 9 Mar no 4 May no -- -- 25 May no 16 Mar Yes 4 May Yes -- -- -- -- 25 May Yes -- -- -- -- 18 May Yes 2 Mar no 18 May no -- -- -- -- -- -- 1 Jun Yes 11 May Yes 25 May no 24 Feb no 8 Jun Yes -- -- 6 Apr no 23 Mar no -- -- 8 Jun Yes -- -- 25 May Yes 27 Apr Yes 1 Jun no -- -- 1 Jun Yes 25 May no 1 May Yes -- -- 2 Mar no -- -- -- -- 11 May Yes 6 Apr no -- -- 16-19 Aug
Kansas City
2 Nov 1976
1980 4 Nov 11-14 Aug
New York
11 Mar no -- -- -- -- x27 May Yes 3 Jun Yes -- -- 25 Mar no -- -- 11 Mar no 11 Mar no -- -- 27 May Yes 18 Mar Yes 6 May Yes -- -- 1 Apr no 27 May Yes 5 Apr no -- -- 13 May Yes 4 Mar no 20 May no -- -- x3 Jun Yes -- -- 3 Jun Yes 13 May Yes 27 May no 26 Feb no 3 Jun Yes 3 Jun Yes 25 Mar no 6 May Yes -- -- 3 Jun Yes -- -- 20 May Yes 22 Apr Yes 3 Jun no x8 Mar no 3 Jun Yes 6 May no 3 May Yes -- -- 4 Mar no -- -- -- -- 3 Jun Yes 1 Apr no -- -- 14-17 Jul
Detroit
4 Nov 1980
1984 6 Nov 16-19 Jul
San Francisco
x13 Mar no -- -- -- -- -- -- 5 Jun Yes -- -- x27 Mar no -- -- 13 Mar no 13 Mar no -- -- 22 May Yes 20 Mar Yes 8 May Yes -- -- -- -- -- -- 5 May no -- -- 8 May Yes 13 Mar no -- -- -- -- -- -- -- -- 5 Jun Yes 15 May Yes -- -- 28 Feb no 5 Jun Yes 5 Jun Yes x3 Apr no x8 May Yes 12 Jun Yes 8 May Yes -- -- 15 May Yes 10 Apr Yes 13 Mar no -- -- x5 Jun Yes 1 May no x5 May Yes -- -- 6 Mar no -- -- -- -- 5 Jun Yes 3 Apr no -- -- 20-23 Aug
Dallas
6 Nov 1984
1988 8 Nov 18-21 Jul
Atlanta
8 Mar no -- -- -- -- 8 Mar Yes 7 Jun Yes -- -- 29 Mar no -- -- 8 Mar no 8 Mar no -- -- 24 May Yes 15 Mar Yes 3 May Yes -- -- -- -- 8 Mar no 8 Mar no -- -- 8 Mar Yes 8 Mar no -- -- -- -- 8 Mar Yes 8 Mar no 7 Jun Yes 10 May Yes -- -- 16 Feb no 7 Jun Yes 7 Jun Yes x19 Apr no 8 Mar no 14 Jun Yes 3 May Yes 8 Mar no 17 May Yes 26 Apr Yes 8 Mar no x5 Mar no 23 Feb no 8 Mar no 8 Mar Yes -- -- 1 Mar no 8 Mar no -- -- 10 May Yes 5 Apr no -- -- 15-18 Aug
New Orleans
8 Nov 1988
1992 3 Nov 13-16 Jul
New York
2 Jun Yes -- -- -- -- 26 May Yes 2 Jun Yes 3 Mar no 24 Mar no -- -- 10 Mar no 3 Mar no -- -- 26 May Yes 17 Mar Yes 5 May Yes -- -- 7 Apr no 26 May Yes 10 Mar no -- -- 3 Mar Yes 10 Mar no 17 Mar no 7 Apr no 10 Mar Yes -- -- 2 Jun Yes 12 May Yes -- -- 18 Feb no 2 Jun Yes 2 Jun Yes x7 Apr no 5 May Yes 9 Jun Yes 2 Jun Yes 10 Mar no 19 May Yes 28 Apr Yes 10 Mar no 7 Mar no 25 Feb no 10 Mar no 10 Mar Yes -- -- -- -- -- -- 19 May no 12 May Yes 7 Apr no -- -- 17-20 Aug
Houston
3 Nov 1992
1996 5 Nov 26-29 Aug
Chicago
4 Jun Yes -- -- x27 Feb no 21 May Yes 26 Mar Yes 5 Mar no x5 Mar no 24 Feb no x12 Mar no 5 Mar no -- -- 28 May Yes 19 Mar Yes 7 May Yes -- -- -- -- 28 May Yes 12 Mar no 5 Mar no 5 Mar Yes 5 Mar no 19 Mar no -- -- 12 Mar Yes -- -- 4 Jun Yes 14 May Yes x26 Mar no 20 Feb no 4 Jun Yes 4 Jun Yes x7 Mar no 7 May Yes 27 Feb no 19 Mar Yes 12 Mar no 12 Mar no 23 Apr Yes 5 Mar no x2 Mar no x27 Feb no 12 Mar no 12 Mar Yes -- -- 5 Mar no -- -- 26 Mar no 14 May Yes 19 Mar no -- -- 12-15 Aug
San Diego
5 Nov 1996
2000 7 Nov 14-17 Aug
Los Angeles
6 Jun Yes -- -- x22 Feb no 23 May Yes 7 Mar Yes 10 Mar no 7 Mar no x5 Feb no 14 Mar no 7 Mar no -- -- 23 May Yes 21 Mar Yes 2 May Yes -- -- -- -- 23 May Yes 14 Mar no 7 Mar no 7 Mar Yes 7 Mar no x22 Feb no -- -- 14 Mar Yes 7 Mar no 6 Jun Yes 9 May Yes -- -- 1 Feb no 6 Jun Yes 6 Jun Yes 7 Mar no 2 May Yes -- -- 7 Mar Yes 14 Mar no 16 May Yes 4 Apr Yes 7 Mar no x19 Mar no 6 Jun Yes 14 Mar no 14 Mar Yes 10 Mar no 7 Mar no x29 Feb no 29 Feb 9 May Yes 4 Apr no -- -- 31 Jul-3 Aug
Philadelphia
7 Nov 2000
2004 2 Nov 26-29 Jul
Boston
1 Jun Yes -- -- x3 Feb no 18 May Yes 2 Mar Yes -- -- x2 Mar no x3 Feb no x9 Mar no 2 Mar no -- -- 25 May Yes 16 Mar Yes 4 May Yes -- -- -- -- 18 May Yes 9 Mar no -- -- 2 Mar Yes 2 Mar no see below -- -- x9 Mar Yes 3 Feb no 8 Jun Yes 11 May Yes -- -- 27 Jan no 8 Jun Yes x1 Jun Yes x2 Mar no -- -- -- -- 2 Mar Yes 3 Feb no 18 May Yes 27 Apr Yes 2 Mar no see below x1 Jun Yes 10 Feb no 9 Mar Yes see below 2 Mar no x10 Feb no -- -- 11 May Yes 17 Feb no -- -- 30 Aug-2 Sep
New York
2 Nov 2004
2008 4 Nov 25-28 Aug
Denver
5 Feb no -- -- 5 Feb no 5 Feb no 5 Feb no -- -- 5 Feb no 5 Feb no 29 Jan no 5 Feb no -- -- 27 May Yes 5 Feb Yes 6 May Yes -- -- -- -- 20 May Yes 9 Feb no -- -- 12 Feb Yes 5 Feb no 15 Jan no -- -- 11 Mar Yes 5 Feb no 3 Jun Yes 13 May Yes -- -- 8 Jan no 5 Feb no x3 Jun Yes 5 Feb no 6 May Yes -- -- 4 Mar Yes 5 Feb no 20 May Yes 22 Apr Yes 4 Mar no x19 Jan no 3 Jun Yes 5 Feb no 4 Mar Yes 5 Feb no 4 Mar no 12 Feb no 19 Feb no 13 May Yes 19 Feb no -- -- 1-4 Sep
St. Paul
4 Nov 2008
2012 6 Nov 3-6 Sep Charlotte 13 May Yes -- -- 28 Feb no 22 May Yes 5 Jun Yes -- -- 24 Apr no 24 Apr no 31 Jan no 6 Mar no -- -- -- -- 20 Mar Yes 8 May Yes -- -- -- -- 22 May Yes 24 Mar no -- -- 3 Apr Yes 6 Mar no 28 Feb no -- -- 13 Mar Yes 7 Feb no 5 Jun Yes 15 May Yes -- -- 10 Jan no 5 Jun Yes 5 Jun Yes 24 Apr no 8 May Yes -- -- 6 Mar Yes 6 Mar no 15 May Yes 24 Apr Yes 24 Apr no 21 Jan no 5 Jun Yes 6 Mar no 29 May Yes 26 Jun Yes 6 Mar no 6 Mar no -- -- 8 May Yes 3 Apr no -- -- 27-30 Aug Tampa 6 Nov 2012
PRESIDENTIAL ELECTION YEAR General Election DEMOCRATIC National Convention Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date? Presidential Primary STATE Primary date REPUBLICAN National Convention General Election PRESIDENTIAL ELECTION YEAR
ALABAMA ALASKA ARIZONA ARKANSAS CALIFORNIA COLORADO CONNECTICUT DELAWARE FLORIDA GEORGIA HAWAII IDAHO ILLINOIS INDIANA IOWA KANSAS KENTUCKY LOUISIANA MAINE MARYLAND MASSACHUSETTS MICHIGAN MINNESOTA MISSISSIPPI MISSOURI MONTANA NEBRASKA NEVADA NEW HAMPSHIRE NEW JERSEY NEW MEXICO NEW YORK NORTH CAROLINA NORTH DAKOTA OHIO OKLAHOMA OREGON PENNSYLVANIA RHODE ISLAND SOUTH CAROLINA SOUTH DAKOTA TENNESSEE TEXAS UTAH VERMONT VIRGINIA WASHINGTON WEST VIRGINIA WISCONSIN WYOMING
 
 

1952:
Florida--Only the DEMOCRATS used the Presidential Primary this year;
Maryland-- Only the DEMOCRATS used the Presidential Primary this year.

1960:
Maryland-- Only the DEMOCRATS used the Presidential Primary this year.

1964:
Texas-- Only the REPUBLICANS used the Presidential Primary this year.

1980:
Arkansas-- Only the DEMOCRATS used the Presidential Primary this year;
Mississippi-- Only the REPUBLICANS used the Presidential Primary this year;
South Carolina-- Only the REPUBLICANS used the Presidential Primary this year.

1984:
Alabama-- Only the DEMOCRATS used the Presidential Primary this year;
Connecticut-- Only the DEMOCRATS used the Presidential Primary this year;
New York-- Only the DEMOCRATS used the Presidential Primary this year;
North Carolina-- Only the DEMOCRATS used the Presidential Primary this year;
South Dakota-- Only the DEMOCRATS used the Presidential Primary this year;
Texas-- Only the REPUBLICANS used the Presidential Primary this year.

1988:
New York-- Only the DEMOCRATS used the Presidential Primary this year;
South Carolina-- Only the REPUBLICANS used the Presidential Primary this year.

1992:
New York-- Only the DEMOCRATS used the Presidential Primary this year.

1996:
Arizona-- Only the REPUBLICANS used the date in the table above for the Presidential Primary this year; the DEMOCRATS held a separate, Party-run, Presidential Primary on 9 March;
Connecticut-- Only the REPUBLICANS used the Presidential Primary this year;
Florida-- Only the REPUBLICANS used the Presidential Primary this year;
Nevada-- Only the REPUBLICANS used the Presidential Primary this year;
New York-- Only the REPUBLICANS used the Presidential Primary this year;
South Carolina-- Only the REPUBLICANS used the Presidential Primary this year;
South Dakota-- Only the REPUBLICANS used the Presidential Primary this year.

2000:
Arizona-- Only the REPUBLICANS used the date in the table above for the Presidential Primary this year; the DEMOCRATS held a separate, Party-run, Presidential Primary on 11 March;
Delaware-- Only the DEMOCRATS used the date in the table above for the Presidential Primary this year; the REPUBLICANS held a separate, Party-run, Presidential Primary on 8 February;
Michigan-- Only the REPUBLICANS used the Presidential Primary this year;
South Carolina-- Only the REPUBLICANS used the date in the table above for the Presidential Primary this year; the DEMOCRATS held a separate, Party-run, Presidential Primary (which functioned much more like a caucus [a so-called "Firehouse Primary"], hence it not being listed in the table above) on 9 March;
Virginia-- Only the REPUBLICANS used the Presidential Primary this year.

2004:
Arizona-- Only the DEMOCRATS used the Presidential Primary this year;
Connecticut-- Only the DEMOCRATS used the Presidential Primary this year;
Delaware-- Only the DEMOCRATS used the Presidential Primary this year;
Florida-- Only the DEMOCRATS used the Presidential Primary this year;
Michigan-- The DEMOCRATS held a Party-run Presidential Primary (which functioned much more like a caucus [a so-called "Firehouse Primary"], hence it not being listed in the table above) on 7 February;
Mississippi-- Only the DEMOCRATS used the Presidential Primary this year;
New Mexico-- Only the REPUBLICANS used the Presidential Primary this year; the DEMOCRATS used a Party-run Presidential Preference "Caucus" (which functioned much more like a so-called "Firehouse Primary") on 3 February;
New York-- Only the DEMOCRATS used the Presidential Primary this year;
South Carolina-- The DEMOCRATS held a Party-run Presidential Primary (which functioned much more like a so-called "Firehouse Primary", hence it not being listed in the table above) on 3 February;
South Dakota-- Only the DEMOCRATS used the Presidential Primary this year;
Utah-- The DEMOCRATS held a Party-run Presidential Primary on 24 February;
Virginia-- Only the DEMOCRATS used the Presidential Primary this year.

2008:
New Mexico-- Only the REPUBLICANS used the date in the table above for the Presidential Primary this year; the DEMOCRATS held a separate, Party-run, Presidential Primary on 5 February;
South Carolina-- Only the REPUBLICANS used the date in the table above for the Presidential Primary this year; the DEMOCRATS held a separate, Party-run, Presidential Primary on 26 January.

 
 

Although it is not a constituent State of the American Union (hence its not being included within the main table above), the DISTRICT OF COLUMBIA- the last remaining incorporated U.S. Territory- has been holding Presidential Primaries since 1956 and was first authorized to do so by a Federal statute adopted the previous year (69 Stat. 699 [1955]: the first time ever that Congress- which, of course, has direct jurisdiction over the District re: its status as a U.S. Territory- adopted regulations specifically pertaining to a Presidential Primary). The following table simply indicates the dates on which D.C. has held its Presidential Primaries over time.

 
DISTRICT OF COLUMBIA Presidential Primaries
YEAR Presidential Primary LOCAL Primary date?
1956 1 May none
1960 3 May none
1964 5 May none
1968 7 May none
1972 2 May Yes
1976 4 May Yes
1980 6 May Yes
1984 1 May Yes
1988 3 May Yes
1992 5 May Yes
1996 7 May no
2000 2 May no
2004 13 Jan no
2008 12 Feb no
2012 3 Apr Yes