= Democrat-held seat = Republican-held seat
Aug. 21
Alaska primary (Results)
Governor House
Wyoming primary (Results)
Governor Senate House
Aug. 28
Arizona primary (Results)
Governor Senate House
Florida primary (Results)
Governor Senate House
Oklahoma primary runoff (Results)
Sept. 4
Massachusetts primary (Results)
Governor Senate House
Sept. 6
Delaware primary (Results)
Senate House
Sept. 11
New Hampshire primary (Results)
Governor House
Sept. 12
Rhode Island primary (Results)
Governor Senate House
Sept. 13
New York state and local primary (Results)
Governor
Nov. 6
General election
Louisiana primary (Results)
House
Dec. 4
Georgia non-federal general election runoff
Dec. 8
Louisiana general election (Results)
House
Jan. 8, 2019
Georgia federal general election runoff (Results)

Past elections

Feb. 27
Arizona 8th District special election primary (Results)
House
March 6
Texas primary (Results)
Governor Senate House
March 13
Pennsylvania 18th District special election (Results)
House
March 20
Illinois primary (Results)
Governor House
April 24
Arizona 8th District special election (Results)
House
May 8
Indiana primary (Results)
Senate House
North Carolina primary (Results)
House
Ohio primary (Results)
Governor Senate House

Including 12th District special election primary

West Virginia primary (Results)
Senate House
May 15
Idaho primary (Results)
Governor House
Nebraska primary (Results)
Governor Senate House
Oregon primary (Results)
Governor House
Pennsylvania primary (Results)
Governor Senate House
May 22
Arkansas primary (Results)
Governor House
Georgia primary (Results)
Governor House
Kentucky primary (Results)
House
Texas primary runoff (Results)
June 5
Alabama primary (Results)
Governor House
California primary (Results)
Governor Senate House
Iowa primary (Results)
Governor House
Mississippi primary (Results)
Senate House
Montana primary (Results)
Senate House
New Jersey primary (Results)
Senate House
New Mexico primary (Results)
Governor Senate House
South Dakota primary (Results)
Governor House
June 12
Maine primary (Results)
Governor Senate House
Nevada primary (Results)
Governor Senate House
North Dakota primary (Results)
Senate House
South Carolina primary (Results)
Governor House
Virginia primary (Results)
Senate House
June 19
D.C. primary (Results)

Including D.C. mayoral race

June 26
Colorado primary (Results)
Governor House
Maryland primary (Results)
Governor Senate House
Mississippi primary runoff (Results)
New York federal primary (Results)
Senate House
Oklahoma primary (Results)
Governor House
South Carolina primary runoff (Results)
Utah primary (Results)
Senate House
June 30
Texas 27th District special election (Results)
House
July 17
Alabama primary runoff (Results)
July 24
Georgia primary runoff (Results)
Aug. 2
Tennessee primary (Results)
Governor Senate House
Aug. 7
Kansas primary (Results)
Governor House
Michigan primary (Results)
Governor Senate House

Including 13th District special election primary

Missouri primary (Results)
Senate House
Ohio 12th District special election
House
Washington primary (Results)
Senate House
Aug. 11
Hawaii primary (Results)
Governor Senate House
Aug. 14
Connecticut primary (Results)
Governor Senate House
Minnesota primary (Results)
Governor Senate Senate House
Vermont primary (Results)
Governor Senate House
Wisconsin primary (Results)
Governor Senate House

About this story

Source: Associated Press

Independent incumbents who caucus with the Democrats are marked as Democrats. Races included in runoff elections are not marked, as that will depend on the result of the original election.

Originally published Dec. 28, 2017.

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