All 50 states + D.C.
Find your state's rules
Every state runs primaries differently. Pick your state to see who can vote in which primary, whether — and by when — you can switch party registration, and links to register or change your affiliation.
Alabama Open Alaska Multi-party / top-N Arizona Open to unaffiliated Arkansas Open California Multi-party / top-N Colorado Open to unaffiliated Connecticut Partially closed Delaware Closed District of Columbia Closed Florida Closed Georgia Open Hawaii Open Idaho Partially closed Illinois Partially open Indiana Partially open Iowa Partially open Kansas Partially closed Kentucky Closed Louisiana Multi-party / top-N Maine Open to unaffiliated Maryland Partially closed Massachusetts Open to unaffiliated Michigan Open Minnesota Open Mississippi Open Missouri Open Montana Open Nebraska Multi-party / top-N Nevada Partially open New Hampshire Open to unaffiliated New Jersey Closed New Mexico Open to unaffiliated New York Closed North Carolina Open to unaffiliated North Dakota Open Ohio Partially open Oklahoma Partially closed Oregon Partially closed Pennsylvania Closed Rhode Island Open to unaffiliated South Carolina Open South Dakota Partially closed Tennessee Closed Texas Open Utah Partially closed Vermont Open Virginia Open Washington Multi-party / top-N West Virginia Partially closed Wisconsin Open Wyoming Closed