The Green Papers
2010 Senatorial Primaries at a Glance


This "at a glance" look at the primary in each State simply lists the winner (and, in many cases, the candidate who came in second) in each Primary in chronological order.

boldface followed by (inc) indicates the incumbent

2010 Senatorial Primaries at a Glance
Date State Democrat
     Winner % Second %      Winner % Second %
Tuesday 2 February 2010 Illinois   Giannoulias 39 Hoffman 34   Kirk D Hughes  
Tuesday 4 May 2010 Indiana   Ellsworth C       Coats 39 Stutzman 29
North Carolina   Marshall (36%) v. Cunningham (27%) proceed to 22 June runoff   Burr (inc)      
Ohio   Fisher D Brunner     Portman U    
Tuesday 18 May 2010 Arkansas   Lincoln (I) 45% v. Halter 42% proceed to 8 June runoff   Boozman D Baker  
Kentucky   Conway 44 Mongiardo 43   Paul D Grayson  
Oregon   Wyden (inc)         Huffman 42 Later 15
Pennsylvania   Sestak D Specter (inc)     Toomey      
Tuesday 25 May 2010 Idaho   Sullivan L Bryk     Crapo (inc)      
Tuesday 1 June 2010 Alabama   Barnes L De Moore     Shelby (inc)      
Tuesday 8 June 2010 Arkansas R Lincoln (inc) N Halter   R        
California   Boxer (inc)         Fiorina D Campbell  
Iowa   Conlin         Grassley (inc) U    
Nevada   Reid (inc) L None of these candidates     Angle 40 Tarkanian 23
North Dakota   Potter U       Hoeven U    
South Carolina   Greene D Rawl     DeMint (inc)      
South Dakota   No nominee   Thune (inc) P    
Tuesday 22 June 2010 North Carolina R Marshall D Cunningham   R        
South Carolina R         R        
Utah   Granato C       Lee N Bridgewater  
Tuesday 13 July 2010 Alabama R         R        
Tuesday 20 July 2010 Georgia   Thurmond         Isakson (inc) U    
Tuesday 27 July 2010 Oklahoma   Rogers L Myles     Coburn (inc)      
Tuesday 3 August 2010 Kansas   Johnston 32 Schollenberger 24   Moran 49 Tiahrt 45
Missouri   Carnahan         Blunt L Purgason  
Tuesday 10 August 2010 Colorado   Bennet (inc) D Romanoff     Buck N Norton  
Connecticut   Blumenthal P       McMahon 49 Simmons 28
Georgia R         R        
Tuesday 17 August 2010 Washington   Murray (inc) 46       Rossi 34    
Tuesday 24 August 2010 Alaska   McAdams 50 Kern 20   Miller N Murkowski (inc)  
Arizona   Glassman 34 Eden 26   McCain
D Hayworth  
Florida   Meek D Greene     Rubio      
Oklahoma R         R        
Vermont   Leahy (inc)         Britton U    
Saturday 28 August 2010 Louisiana   Melancon L Chauvin     Vitter (inc)      
West Virginia   Manchin L Hechler     Raese L Warner  
Tuesday 14 September 2010 Delaware   Coons U       O'Donnell D Castle  
Maryland   Mikulski (inc)         Wargotz 38 Rutledge 31
New Hampshire   Hodes U       Ayotte 39 Lamontagne 38
New York   Full term (6 yr):
Schumer (inc.) (U).
Partial term (2 yr):
Gillibrand (inc.)
  Full term (6 yr):
Townsend (D) - Berntsen.
Partial term (2 yr):
DioGuardi (42) - Malpass (38)
Wisconsin   Feingold (inc) U       Johnson      
Saturday 18 September 2010 Hawaii   Inouye (inc)         Cavasso L Roco  
Saturday 2 October 2010 Louisiana                    


  • If a candidate wins 75.5% or more of the primary vote, the second place finisher is not listed.
  • U means that this candidate ran in the primary unopposed (that is, with no other candidates appearing on the ballot but him/her). Please note that write-ins do NOT count as such "other candidates on the ballot" but the appearance of "Uncommitted" (or equivalent, such as "None of the Above") on a ballot DOES.
  • L indicates a landslide majority [60.5 to 75.4% of the primary vote] for the winner.
  • D indicates a decisive majority [52.5 to 60.4% of the primary vote] for the winner.
  • N indicates a narrow majority [50.0(+1 vote) to 52.4% of the primary vote] for the winner.
  • Where a winning (or, in a runoff State, leading) candidate has failed to gain at least a majority of the primary vote, the winner(leader) of the primary and the candidate who came in second are both listed with their respective percentages of the primary vote rounded up or down to the nearest whole integer.
  • C indicates the Party's nominee was chosen by a Party-run process other than the Primary (State Convention, Party Central Committee or equivalent).
  • P indicates Primary cancelled / nomination by default because nominee was the only candidate to have filed for this Party's Primary for this office. P also applies to nominees-to-be by apparent Party consensus (i.e. no opposition at an ensuing Convention).
  • R indicates any Runoff which has been scheduled for this date.

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