However, the last polls for Senate for Arizona, Florida, Iowa, Louisiana and New Hampshire showed a tighter race between the republican and democrat candidates than was actually the case.
Those polls can be reviewed at RealClearPolitics.
Meanwhile, their last polls for West Virginia, Washington, Pennsylvania, Nevada, Illinois, Colorado, California, Alaska, Kentucky and Wisconsin showed the Republican candidate performing better than they actually did.
Those polls can be reviewed at this website.
(And whereas the
final polls I cited were all conducted in the last week of October, the Iowa poll you cited was from late May. Although it was indeed the last poll PPP conducted there, it doesn't seem particularly relevant to our discussion.)
