Looking at the crosstabs, it appears Clinton's weakness is due to around 12% of Democrats consistently voting for the Republican option while only 6% of Republicans are crossing over to vote for her. Republicans obviously loathe her, but it might take until she's officially the nominee (and there's an actual Republican nominee to hate) before Democrats fully coalesce around her. I expect her numbers will be slightly depreciated among Democrats throughout the primary season now.
And she's beating everyone apart from Rand with independents, which is in line with all recent polling.
On the other hand, the numbers confirm that any other Democrat would lose in a landslide.
How so? The other Democrats have almost zero name recognition. Also, take a look at the number of undecideds. Walker gets 40% against unknown Democrats, not that impressive.
Sanders and Walker have roughly equal name recognition and Walker is thrashing him (the PPP polls in Washington and North Carolina showed the same thing).
And does anyone have an explanation for why everyone's favorability numbers are always so much worse in PPP polls? What the hell are they asking people?