From Hot Air:
Fox takes a sample of 906 registered voters (landline and cell), which breaks out into a D/R/I of 41/39/20, which gets a good balance between Democrats and Republicans but oversamples both at the expense of independents. From this, the pollster gets 365 primary voters, which it claims as “likely voters,” even though this is the same subset of Republicans in the sample marked “registered voters.” However, this is the same methodology used in the Fox poll series for the last several months, and about the average for sample sizes on the primary question, so the series can at least be expected to reflect trending. Why does Fox News include any Democrats in a sample for a Republican Primary election. This is deliberate distortion by Fox News.
41% Democrats? Come on Fox News; you're getting as bad a PMSNBC.
Apparently, Romney's support among Republicans was -1 percent.