Today six states were gathering opinions about the remaining Democrats who seek the party's nomination for president. These were MI, MO, MS, ND, ID, and WA.
Of these 6, four have been called for Biden - MI, MO, MS, and ID. Sanders is ahead in the remaining two, but by margins too narrow to call. In WA with over a million votes cast, Sanders is ahead by ca. 2000. Sanders will, however, get significant delegates from all but MS.
If I'm interpreting the RCP chart of results correctly, substantial numbers of primary voters have cast ballots for candidates no longer actively pursuing the nomination. In the state of Washington both Warren and Bloomberg are in double digits percentage wise, though neither is achieving the 15% cutoff for delegates.
I wonder if those "throw away votes" represent Washingtonians' dissatisfaction with Biden and Sanders? Perhaps it only means WA has been voting for a month or so.