Arizona Aug. 28 Florida Aug. 28 Massachusetts Sept. 4 Delaware Sept. 6 New Hampshire Sept. 11 Rhode Island Sept. 12 (Wednesday) New York Sept. 13 (Thursday) ** Louisiana Nov. 6 | Dec. 8*http://www.ncsl.org/research/elections-and-campaigns/2018-state-primary-election-dates.aspx
Not so. There are two AZ senate seats in play at the moment. With Flake leaving at the end of his 6-year term, one senate seat opened up. That's what the primary is for.
No Name's death opened up another senate seat, for the remaining 4+ year's of his term. After the funeral, Governor Ducey will appoint a new senator to that seat.
Two different seats.