I will be starting today what I will endeavor to make a monthly feature. Growing out of my PhD, I have been tracking a large amount of polling information over the last few years and further back into the past in regards to Japanese politics and foreign policy. If the data exists, I likely know about it, if not have already worked it into a chart of some sort.
While most of this information and the associated analysis will be kept under wraps for the time being, in an effort to blog at least once a month I will provide a run down of the latest cabinet support rate data from over 11 different survey organizations, and analysis of any other survey questions from the previous month that piqued my interest.
The quality of the analysis will likely be directly correlated with the amount of time I have, but if you have a better take on the data than I do, then please feel free to continue the conversation in the comments.
Very Brief Methodology Note: I am using polls only from organizations that take a nationwide probability sample, preferably using two-stage stratified random sampling methods. These polls generally derive 1000 participants from a population sample, although some organizations such as the Asahi often acquire a sample size of up to 2000. Assuming a minimum sample size of around 900-1000 participants, the confidence interval for these surveys is approximately 2.2 percent at a 95 percent confidence level, and 2.9 percent at a 99 percent confidence level. Most of these survey organizations’ surveys have participation rates of around 50 percent, which in contemporary surveying is actually quite robust. That said, this does not mean all polls are created equal and I will over time point out those polls which yield results that deviate consistently from the median and average poll results.