In the same time period, Rasmussen shows a 15 point lead for Cantwell but Zogby only 7. Also Rasmussen only shows a 5 point lead for Crist but every other poll that I've seen has him up double digits. I think Ras may be off this year. IMO.
Ramussen has been erratic to say the least. He shows Casey ahead by 12 points. That's absurd. Santorum may well lose, but it will be by a couple points or less if it does happen, not 12.