The 2018 North Dakota Senate election was held on November 6, 2018, to determine which party would control the North Dakota Senate for the following two years in the 66th Legislative Assembly of North Dakota. The 24 odd-numbered seats out of the 47 seats in the North Dakota Senate were up for election and the primary was held on June 12, 2018. Prior to the election, 38 seats were held by Republicans and 9 seats were held by Democrats. The general election saw Democrats flip a single seat, thereby meaning that Republicans retained their majority in the State Senate.
Predictions SourceRankingAs of Governing | October 8, 2018
Retirements Democrats District 21: Carolyn Nelson retired.
Republicans District 19: Tom Campbell retired to unsuccessfully run for North Dakota's at-large congressional district. District 27: Jonathan Casper retired. District 39: Bill Bowman retired. District 47: Ralph Kilzer retired.
Incumbents defeated In general Republicans District 43: Lonnie Laffen lost re-election to JoNell Bakke.
Closest races Seats where the margin of victory was under 10%:
(gain)
Results District 1
District 3
District 5
District 7
District 9
District 11
District 13
District 15
District 17
District 19
District 21
District 23
District 25
District 27
District 29
District 31
District 33
District 35
District 37
District 39
District 41
District 43
District 45
District 47
References