Until 2008, Missouri had been one of the nation’s most reliable bellwethers in presidential politics. From 1904 to 2004, it voted for the winning presidential candidate in every election except 1956, when it chose Democrat Adlai Stevenson over Republican President Dwight Eisenhower. See 2020 primary results
CNN will broadcast a projected winner only after an extensive review of data from a number of sources.
"Flipped seat" denotes a race where the 2020 projected winner is from a different party than the previous winner or incumbent.
Both Maine and Nebraska allow electoral votes to be split. In Maine, two of four electoral votes go to the statewide winner and one electoral vote goes to the winner in each of the two congressional districts. In Nebraska, two of five electoral votes go to the winner of the statewide vote. One electoral vote goes to the winner in each of Nebraska's three congressional districts.