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 %)
Here's the thing with ARG: In the early primaries of 2008, they weren't just bad. They were producing numbers that were roughly the opposite of reality. Whatever side of the polling average they were on, the final vote tally would end up on the opposite side. Then after Super Tuesday, they suddenly started producing reasonable numbers. My assumption is that they started cheating by making up numbers that looked more reasonable than what their awful polls were saying, but I have no proof of this.
