Patrick Murry, founding director of the Monmouth University Polling Institute, posted the following piece on his blog Real Numbers and Other Musings:
The conventional wisdom in New Jersey’s gubernatorial race is the better that Chris Daggett does, the worse Chris Christie does. Certainly, Daggett’s rise in the polls over the past four weeks is a nearly point for point match with Christie’s drop in support.
That certainly is true at the aggregate level, as I have noted elsewhere. Specifically, if you compare this week’s Quinnipiac Poll to the one they released September 1, you will find that Christie’s support dropped by 6 points, Corzine’s increased by 3, Daggett’s increased by 5 and Undecided decreased by 1. While Corzine made some gains, it seems the big switch was from Christie to Daggett, with Undecided remaining stable.
I stand by this analysis, but there may be more to this phenomenon than the naked eye can see. Research conducted by the Monmouth University Polling Institute with a panel of New Jersey voters indicates that this “net” effect may actually be masking a lot more individual-level churning in the electorate.
The first round of our online panel was interviewed September 23-28 (Wave 1). A total of 340 of these respondents then participated in a second round of interviews on October 9-14 (Wave 2). [Note: the intention of this panel study is to track individual level change over time. As such, it is not necessarily designed to be representative of candidate choice for the full electorate. That is why I refrain from reporting “horse race” percentages here. We’ll leave that for our standard telephone polling.]
The survey analysis divided the vote choice question into 14 separate categories. Those who make a candidate choice (Christie, Corzine, Daggett, Other) were asked if they are either “very sure” about their choice or “might change” their mind before election day – leading to a total of 8 categories. Those who initially indicate they are Undecided were then asked if they “lean” toward a candidate – producing 5 categories (Lean to Christie, Corzine, Daggett, Other or do not lean to any candidate). The final category is for those who say they will not cast a vote for governor on the ballot.