Source: NASS (National Association of Secretaries of State) ¹
January
3
Iowa caucuses (Dem. | Rep.)
5
Wyoming caucus (Rep.)
8
New Hampshire (Dem. | Rep.)
15
Michigan (Dem. | Rep.)
19
Nevada caucuses (Dem. | Rep.), South Carolina (Rep.)
26
South Carolina (Dem.)
29
Floriada (Dem. | Rep.)
February
2
Maine caucus (Rep.)
5
Alabama (Dem. | Rep.), Alaska caucuses (Dem. | Rep.), Arizona (Dem. | Rep.), Arkansas (Dem. | Rep.), California (Dem. | Rep.), Colorado caucuses (Dem. | Rep.), Connecticut (Dem. | Rep.), Delaware (Dem. | Rep.), Georgia (Dem. | Rep.), Idaho caucus (Dem.), Illinois (Dem. | Rep.), Kansas caucus (Dem.), Massachusetts (Dem. | Rep.), Minnesota caucuses (Dem. | Rep.), Missouri (Dem. | Rep.), Montana caucus (Rep.)¹, New Jersey (Dem. | Rep.), New Mexico caucus (Dem.), New York (Dem. | Rep.), North Dakota caucuses (Dem. | Rep.), Oklahoma (Dem. | Rep.), Tennessee (Dem. | Rep.), Utah (Dem. | Rep.), West Virginia (Rep.)²
9
Kansas caucus (Rep.), Louisiana (Dem. | Rep. caucus), Nebraska caucus (Dem.), Washington caucus (Dem. | Rep.)³
10
Maine caucus (Dem.)
12
District of Columbia (Dem. | Rep.), Maryland (Dem. | Rep.), Virginia (Dem. | Rep.)
19
Hawaii caucus (Dem.), Washington (Dem. | Rep.), Wisconsin (Dem. | Rep.)
March
4
Ohio (Dem. | Rep.), Rhode Island (Dem. | Rep.), Texas (Dem. | Rep.), Vermont (Dem. | Rep.)
8
Wyoming caucus (Dem.)
11
Mississippi (Dem. | Rep.)
April
22
Pennsylvania (Dem. | Rep.)
Mai
6
Indiana (Dem. | Rep.), North Carolina (Dem. | Rep.)
13
Nebraska (Rep.), West Virginia (Dem.)
20
Kentucky (Dem. | Rep.), Oregon (Dem. | Rep.)
27
Idaho (Rep.)
16-18
Hawaii caucus (Rep.)
June
3
Montana (Dem.), New Mexico (Rep.), South Dakota (Dem. | Rep.)
November
4
U.S. General Election
² State nominating convention for delegate selection
³ Party caucuses for delegate selection (GOP selects 51% of delegates; Dems select all delegates)