So I thought I'd better put up my quadrannual (I just made up that word) Presidential Primary Calendar!
I'm still checking dates and places, and I've largely omitted any Republican contests since Trump obviously has the Republican party locked down to within an inch of its life.
Here is it. Mistakes are likely, and all mine.
February 2020
3 Mon. Iowa caucuses
11 Tue. New Hampshire primaries
22 Sat. Nevada Democratic caucuses
29 Sat. South Carolina Democratic primary
March 2020
3 Tue. SUPER TUESDAY
Alabama primaries
American Samoa Democratic caucus
Arkansas primaries
California primaries
Colorado primaries
Maine primaries
Massachusetts primaries
Minnesota primaries
North Carolina primaries*
Oklahoma primaries
Tennessee primaries
Texas primaries
Utah primaries
Vermont primaries*
Virginia Democratic primary
Democrats Abroad primary
10 Tue. Idaho primaries*
Michigan primaries
Mississippi primaries
Missouri primaries
North Dakota Democratic caucuses
Washington primaries
12 Thu. Virgin Islands Republican caucus*
14 Sat. Northern Marianas Democratic convention
17 Tue. Arizona Democratic primary
Florida primaries
Illinois primaries
Ohio primaries
24 Tue. American Samoa Republican caucus*
Georgia primaries
29 Sun. Puerto Rico Democratic primary
April 2020
4 Sat. Alaska Democratic primary
Hawaii Democratic primary
Louisiana primaries*
Wyoming Democratic caucuses
7 Tue. Wisconsin primaries
28 Tue. Connecticut primaries
Delaware primaries*
Maryland primaries
New York primaries
Pennsylvania primaries
Rhode Island primaries
May 2020
2 Sat. Guam Democratic caucus
Kansas Democratic primary
5 Tue.
Indiana primaries*
12 Tue. Nebraska primaries
West Virginia primaries
19 Tue. Kentucky Democratic primary
Oregon primaries
June 2020
2 Tue. District of Columbia primaries
Montana primaries
New Jersey primaries*
New Mexico primaries
South Dakota primaries*
6 Sat. Virgin Islands Democratic caucuses
July 2020
13-16 Mon. Democratic National Convention