Sure, he could make it up elsewhere. But that's a big uncertainty that could throw it all off.
Viable:
Sanders 74
Warren 55
Buttigieg 47
Biden 46
Nonviable:
Klobuchar 24
Yang 13
Gabbard 2
See Biden's only opportunity?
Sanders 79 (+5)
Warren 70 (+15)
Buttigieg 61 (+14)
Biden 50 (+4)
Warren and Pete took Biden's thunder. See, if this happens everywhere, Biden could have a very bad night.
Biden is not viable is some of these Des Moines. Don't know all of them, but it's a stunner for them in those identified.
His modeling will collapse if this keeps up.
And Ann Selzer may have struck again, even though the poll was killed.