Primary Election Dates by Month

Month State/Territory Incumbent Primary Date
March Texas Greg Abbott March 6
  Illinois Bruce Rauner March 20
April No primaries scheduled
May Ohio John Kasich* May 8
  Idaho Butch Otter* May 15
  Nebraska Pete Ricketts May 15
  Oregon Kate Brown May 15
  Pennsylvania Tom Wolf May 15
  Arkansas Asa Hutchinson May 22
  Georgia Nathan Deal* May 22
June Alabama Kay Ivey June 5
  California Jerry Brown* June 5
  Iowa Kim Reynolds June 5
  New Mexico Susana Martinez* June 5
  South Dakota Dennis Daugaard* June 5
  Maine Paul LePage* June 12
  Nevada Brian Sandoval* June 12
  South Carolina Henry McMaster June 12
  Colorado John Hickenlooper* June 26
  Maryland Larry Hogan June 26
  Oklahoma Mary Fallin* June 26
July No primaries scheduled
August Tennessee Bill Haslam* Aug. 2
  Virgin Islands Kenneth Mapp Aug. 4
  Kansas Sam Brownback* Aug. 7
  Michigan Rick Snyder* Aug. 7
  Hawaii David Ige Aug. 11
  Connecticut Dan Malloy* Aug. 14
  Minnesota Mark Dayton* Aug. 14
  Vermont Phil Scott Aug. 14
  Wisconsin Scott Walker Aug. 14
  Alaska Bill Walker Aug. 21
  Wyoming Matt Mead* Aug. 21
  Guam Eddie Calvo* Aug. 25
  Arizona Doug Ducey Aug. 28
  Florida Rick Scott* Aug. 28
September New Hampshire Chris Sununu Sept. 11
  New York Andrew Cuomo Sept. 11
  Rhode Island Gina Raimondo Sept. 11
  Massachusetts Charlie Baker Sept. 18

*Incumbent not eligible to run or not seeking re-election.

Primary Election Dates by State

State/Territory Incumbent Primary Date
Alabama Kay Ivey June 5, 2018
Alaska Bill Walker Aug. 21, 2018
Arizona Doug Ducey Aug. 28. 2018
Arkansas Asa Hutchinson May 22, 2018
California Jerry Brown* June 5, 2018
Colorado John Hickenlooper* June 26, 2018
Connecticut Dan Malloy* Aug. 14, 2018
Florida Rick Scott* Aug. 28, 2018
Georgia Nathan Deal* May 22, 2018
Guam Eddie Calvo* Aug. 25, 2018
Hawaii David Ige Aug. 11, 2018
Idaho Butch Otter* May 15, 2018
Illinois Bruce Rauner March 20, 2018
Iowa Kim Reynolds June 5, 2018
Kansas Sam Brownback* Aug. 7, 2018
Maine Paul LePage* June 12, 2018
Maryland Larry Hogan June 26, 2018
Massachusetts Charlie Baker Sept. 18, 2018
Michigan Rick Snyder* Aug. 7, 2018
Minnesota Mark Dayton* Aug. 14, 2018
Nebraska Pete Ricketts May 15, 2018
Nevada Brian Sandoval* June 12, 2018
New Hampshire Chris Sununu Sept. 11, 2018
New Mexico Susana Martinez* June 5, 2018
New York Andrew Cuomo Sept. 11, 2018
Northern Mariana Islands Ralph Deleon Guerrero  
Ohio John Kasich* May 8, 2018
Oklahoma Mary Fallin* June 26, 2018
Oregon Kate Brown May 15, 2018
Pennsylvania Tom Wolf May 15, 2018
Rhode Island Gina Raimondo Sept. 11, 2018
South Carolina Henry McMaster June 12, 2018
South Dakota Dennis Daugaard* June 5, 2018
Tennessee Bill Haslam* Aug. 2, 2018
Texas Greg Abbott March 6, 2018
Vermont Phil Scott Aug. 14, 2018
Virgin Islands Kenneth Mapp Aug. 4, 2018
Wisconsin Scott Walker Aug. 14, 2018
Wyoming Matt Mead* Aug. 21, 2018

 *Incumbent not eligible to run or not seeking re-election.