2020 State Primary Election Dates

10/15/2019

Introduction

The dates for state primaries are listed below. These primaries are used by political parties to determine which candidates for legislative seats will go on the general election ballot on Nov. 3, 2020. These include legislative seats in 46 states along with U.S. senators and representatives, governors and statewide officials. (For presidential primary dates, see below.)

Note that Louisiana, Mississippi, New Jersey and Virginia hold their legislative elections in odd-numbered years. The dates listed for those states apply to congressional and other races. See our report, Why do Four States have Odd-Year Elections?, for more information. 

The earliest state primaries for 2020 are held March 3 and the latest in mid-September. June and August are the busiest months for state primaries.

Some states have reserved dates for a primary runoff in the event that no candidate gets the requisite percentage of votes. For details on how runoffs work in these states, visit NCSL's Primary Runoffs webpage.

Louisiana’s Nov. 3, 2020, election is an all-comers primary, where candidates of all parties are listed on one ballot together. If no candidate for a race receives a majority of the votes, the winner will be determined in a runoff on Dec. 5.

The manner in which party primary elections are conducted varies widely from state to state. Please visit the State Primary Elections page for information on types of primaries, such as "closed," "open" and "Top Two."

Note that primary dates are subject to change. Dates listed here are based on state election resources or statutory requirements as of October 15, 2019.

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2020 Primary Dates

State

STATE PRIMARY | RUNOFF DATE
Alabama* March 3 | March 31
Alaska Aug. 18
Arizona Aug. 4
Arkansas March 3 | March 31
California March 3
Colorado June 30
Connecticut Aug. 11
Delaware Sept. 15
Florida Aug. 18
Georgia May 19 | July 21
Hawaii Aug. 8
Idaho May 19
Illinois March 17
Indiana May 5
Iowa June 2
Kansas Aug. 4
Kentucky May 19
Louisiana* Nov. 3 | Dec. 5
Maine June 9
Maryland April 28
Massachusetts Sept. 15
Michigan Aug. 4
Minnesota Aug. 11
Mississippi* March 10 | March 31
Missouri Aug. 4
Montana June 2
Nebraska May 12
Nevada June 9
New Hampshire Sept. 8
New Jersey* June 2
New Mexico June 2
New York June 23
North Carolina** March 3
North Dakota June 9 
Ohio March 17
Oklahoma June 30 | Aug. 25
Oregon May 19
Pennsylvania April 28
Rhode Island Sept. 8
South Carolina June 9 | June 23
South Dakota June 2 | Aug. 11
Tennessee Aug. 6
Texas March 3 | May 26
Utah June 30
Vermont Aug. 11
Virginia* June 9
Washington Aug. 4
West Virginia May 12
Wisconsin Aug. 11
Wyoming Aug. 18

*No primary for state legislative seats in 2020.

**A second primary may be held on either May 12 or April 21, in certain circumstances.

Presidential

STATE EXPECTED PRIMARY/CAUCUS
Alabama March 3 primary
Alaska April 4 (D) party-run primary, none (R)
Arizona March 17 primary (D), none (R)
Arkansas March 3 primary
California March 3 primary
Colorado March 3 primary
Connecticut April 28 primary
Delaware April 28 primary
Florida March 17 primary
Georgia March 24 primary
Hawaii April 4 (D) party-run primary, March 10 (R) caucus
Idaho March 10 primary
Illinois March 17 primary
Indiana May 5 primary
Iowa Feb. 3 caucuses (both parties)
Kansas May 2 (D) party-run primary, none (R)
Kentucky May 19 (D) primary, March 21* (R) caucus
Louisiana April 4 primary
Maine March 3 primary
Maryland April 28 primary
Massachusetts March 3 primary
Michigan March 10 primary
Minnesota March 3 primary
Mississippi March 10 primary
Missouri March 10 primary
Montana June 2 primary
Nebraska May 12 primary
Nevada Feb. 22 (D) caucus, none (R)
New Hampshire Feb. 11 primary
New Jersey June 2 primary
New Mexico June 2 primary
New York April 28 primary
North Carolina March 3 primary
North Dakota March 10 (D) party-run primary, TBD (R) caucus
Ohio March 17 primary
Oklahoma March 3 primary
Oregon May 19 primary
Pennsylvania April 28 primary
Rhode Island April 28 primary
South Carolina Feb. 29 (D) primary, none (R)
South Dakota June 2 primary
Tennessee March 3 primary
Texas March 3 primary
Utah March 3 primary
Vermont March 3 primary
Virginia March 3 primary (D), none (R)
Washington March 10 primary
West Virginia May 12 primary
Wisconsin April 7 primary
Wyoming April 4 caucus, (R) TBD

*Anticipated date, subject to change.