Jim Geraghty and a couple of his regular readers found some rather odd crosstabs in recent Public Policy Polling releases in New Hampshire and California races that purport to show surges for Democrat candidates. At the same time other pollsters (no, Bill, not just Rasmussen) are finding fewer self-identified Democrats and liberals nationwide, PPP somehow found more of them in both New Hampshire and California for their latest polls.
Something tells me that a close examination of the PPP crosstabs in their next series of Wisconsin releases is in order.