Wow, she doesn't even get the Patented Scott Rasmussen Double-Digit Primary Bounce? That must hurt.
Maybe it's an outlier.
I've been of the opinion that Rasmussen's bias comes from their tight voter screens far out from election day. For a race like this, which really wasn't THAT high profile, Boxer probably benefits more than Blumenthal and Conway in name I.D. In an open-seat race, such screens would favor the "I'll vote Republican, even if I have no idea who that guy is" voter more than the equivalent for the Democrat. However, in this race, it'd be the inverse maybe?