State/Territory Primary Date Republican Democrat Other Party
Alabama June 3 Gov. Robert Bentley Parker Griffith  
Alaska August 19 Gov. Sean Parnell   Bill Walker
Arizona August 26 Doug Ducey Fred DuVal  
Arkansas May 20 Asa Hutchinson Mike Ross  
California June 3 Neel Kashkari Gov. Jerry Brown  
Colorado June 24 Bob Beauprez Gov. John Hickenlooper  
Connecticut August 12 Tom Foley Gov. Dan Malloy  
Florida August 26 Gov. Rick Scott Charlie Crist Adrian Wyllie
Georgia May 20 Gov. Nathan Deal Jason Carter  
Guam August 30 Gov. Eddie Calvo Carl Gutierrez  
Hawaii August 9 Duke Aiona David Ige Mufi Hannemann
Idaho May 20 Gov. C.L. “Butch” Otter A.J. Balukoff  
Illinois March 18 Bruce Rauner Gov. Pat Quinn  
Iowa June 3 Gov. Terry Branstad Jack Hatch  
Kansas August 5 Gov. Sam Brownback Paul Davis  
Maine June 10 Gov. Paul LePage Mike Michaud Eliot Cutler
Maryland June 24 Larry Hogan Anthony Brown  
Massachusetts September 9 Charlie Baker Martha Coakley  
Michigan August 5 Gov. Rick Snyder Mark Schauer  
Minnesota August 12 Jeff Johnson Gov. Mark Dayton  
Nebraska May 13 Pete Ricketts Chuck Hassebrook  
Nevada June 10 Gov. Brian Sandoval Robert Goodman  
New Hampshire September 9 Walt Havenstein Gov. Maggie Hassan  
New Mexico June 3 Gov. Susana Martinez Gary King  
New York September 9 Rob Astorino Gov. Andrew Cuomo  
Ohio May 6 Gov. John Kasich Ed FitzGerald  
Oklahoma June 24 Gov. Mary Fallin Joe Dorman  
Oregon May 20 Dennis Richardson Gov. John Kitzhaber  
Pennsylvania May 20 Gov. Tom Corbett Tom Wolf  
Rhode Island September 9 Allan Fung Gina Raimondo  
South Carolina June 10 Gov. Nikki Haley Vincent Sheheen Tom Ervin,
Steve French
South Dakota June 3 Gov. Dennis Daugaard Susan Wismer  
Tennessee August 7 Gov. Bill Haslam Charles Brown  
Texas March 4 Greg Abbott Wendy Davis  
Vermont August 26 Scott Milne Gov. Peter Shumlin  
Virgin Islands August 2 Donna Christensen   Soraya Diase Coffelt,
Kenneth Mapp
Wisconsin August 12 Gov. Scott Walker Mary Burke  
Wyoming August 19 Gov. Matt Mead Pete Gosar