11 February 2020 — 1217 mst

Background information on Iowa and Nevada caucuses,
New Hampshire and South Carolina primaries

New Hampshire’s voters are casting ballots in their primary today. For Democrats, 24 pledged delegates are at stake. At the 13–16 July convention, there will be 3,979 pledged delegates, the delegates eligible to vote on the first ballot. If the nomination goes to a second ballot, the pledged delegates will be joined by 771 superdelegates. New Hampshire’s outsized influence on the nomination comes not from its handful of delegates but from its determination to be the nation’s first primary.

South Carolina holds the next primary, on 29 February; Nevada, the next caucus, on 22 February. Ballotpedia provides the full schedule of nominating events.

The summary table below displays the presidential electoral history of the first four beginning in 1920, when women’s suffrage became universal. Three of the first four states — Iowa, New Hampshire, and Nevada — have chosen Democrats in approximately half of the elections since 18-year-olds got the vote in 1972. South Carolina voted for Jimmy Carter in 1976, but otherwise has voted for Republicans in all elections beginning in 1964, when the Civil Rights Act was passed.

You can download the Flathead Memo spreadsheet that includes the full summary table and other information. The best source for presidential election results is Dave Liep’s Atlas of U.S. Presidential Elections.