[kabar]

For CNN to achieve the result they did, they used an R 30% D 40% I 30% sample.

Not so. Did you read the 48 page report? They sampled 1022 people comprised of 441 Dems, 397 Reps, and 184 Independents. They did not provide the number of independents, but they did provide the number of Dems and Reps so one could assume the remainder are independents.

[smoothsailing]

Not so. Did you read the 48 page report?

I did see those numbers, but didn't use them because I wanted to fit numbers in a model based on Rasmussen's 29% Indy standard and build on that to see how skewed the rest would be. I rounded the 29 to 30 for the sake of simplicity.

Your numbers translate to a D 43% R 39% I 18% sample. It's another strange model, D +10 R +2 I -12. Only the R part approaches something sensible. The D's and I's are way out of whack.