How Did Pollsters Do on Tuesday?

California:

• Reuters/CSpan/Zogby, 2/03-2/04, Obama 49, Clinton 36.
• SurveyUSA, 2/03-2/04, Clinton 52, Obama 42.
• Result: Clinton 52, Obama 42.

Missouri:

• Reuters/CSpan/Zogby, 2/02-2/04, Obama 45, Clinton 42.
• SurveyUSA, 2/02-2/04, Clinton 54, Obama 43.
• Result: Obama 49, Clinton 48.

Connecticut:

• SurveyUSA, 2/02-2/03, Obama 48, Clinton 46.
• Result: Obama 51, Clinton 47.

New Jersey:

• Rasmussen, 2/04-2/04, Clinton 49, Obama 43.
• Reuters/CSpan/Zogby, 2/02-2/04, Clinton 46, Obama 41.
• SurveyUSA, 2/02-2/03, Clinton 52, Obama 41.
• Result: Clinton 54, Obama 44.

Oklahoma:

• SurveyUSA, 2/02-2/03, Clinton 54, Obama 27.
• Result: Clinton 55, Obama 31.

New York:

• Quinnipac, 1/30-2/04, Clinton 53, Obama 39.
• SurveyUSA, 2/02-2/03, Clinton 56, Obama 38.
• Result: Clinton 57, Obama 40.

Massachusetts:

• SurveyUSA, 2/02-2/03, Clinton 56, Obama 39.
• Suffolk/WHDH, 2/01-2/03, Clinton 44, Obama 46.
• Result: Clinton 56, Obama 41.

Illinois:

• SurveyUSA, 2/02-2/03, Obama 66, Clinton 30.
• Result: Obama 65, Clinton 33.

Georgia:

• Reuters/CSpan/Zogby, 2/02-2/04, Obama 49, Clinton 29.
• Result: Obama 67, Clinton 31.

I conclude that if SurveyUSA tells you something is so, it's not absolutely guaranteed to be true, but you'd be wise to believe it (within the margin of error). The rest are hit-or-miss.

Also, Bradley effect? What Bradley effect?