Taking a look at 2012 ARG primary polls, looks like they weren't so bad, expecially in NH and SC (here they exactly predicted Romney's and Gingrich's %)
Gravis was close in 2014. You think Gravis is a good pollster?
Same logic applied, PPP was close in 2012. Do you think PPP is a good pollster?
PPP doesn't (always) produce outlandish results that don't reflect reality, so yes, I think PPP is a good pollster. They don't show Kasich at 13% after many polls show him dipping to 6-7% after being above 10% for a long time.
