See #32.
We don’t have Rasmussen’s data set. Without the data set, one can’t say too much about how Rasmussen arrives at his results.
Rasmussen himself says he arrives at Party ID by a sample of 15,000 respondents. Why would we not believe him?
In September Rasmussen himself said D+2 to D+4 and we know from Cruising For Freedom’s calculations that he IS now using D+5. There is nothing more to debate about this subject. The math and Rasmussen’s own words tell the entire story.