This is a national poll? So either this poll is junk, or PPP has a huge Republican bias?
It looks like this is a national poll, yes.
But among their poll questions (which is of registered voters), it says that the respondents voted for Obama over Romney by 51-42.
So, the Clinton vs. GOP numbers are much better than that.
Maybe there is a difference between robo-polls (PPP) and telephone polls when it comes to Hillary.
Or the numbers are made to look good for her because the polling institute is a "Clinton" one.