Just peaked over at the RCP site for the latest poll averages and noticed that as usual the Ras daily tracking poll is included in their averages but two recent polls that show Romney ahead by 3 -4 points were excluded, the UPI and Daily Kos polls. Anyone know why they cherry pick certain polls over there instead of including all polls? I seem to remember in the past all polls were included in their averages.
PPP does advocacy polling for Democrats. As for UPI, it was something about the methodology that they believed was suspect. Zogby in particular came in for a lot of criticism in 2008 for his practices. I don’t know if he polls for UPI or not.
RCP refuses to explain why they use some polls,but not others.