John Ziegler ccommissioned a Zogy poll which indicated that Obama voters knew a lot about the unfortunate statements, etc., associated with McCain/Palin but almost nothing about the bad points regarding Obama/Biden.

For instance:

Obama voters did not fare nearly as well overall when asked to answer questions about statements or stories associated with Obama or Biden — 83% failed to correctly answer that Obama had won his first election by getting all of his opponents removed from the ballot, and 88% did not correctly associate Obama with his statement that his energy policies would likely bankrupt the coal industry. Most (56%) were also not able to correctly answer that Obama started his political career at the home of two former members of the Weather Underground.

Nearly three quarters (72%) of Obama voters did not correctly identify Biden as the candidate who had to quit a previous campaign for President because he was found to have plagiarized a speech, and nearly half (47%) did not know that Biden was the one who predicted Obama would be tested by a generated international crisis during his first six months as President.

The media covered the McCain/Palin statements but not the Obama/Biden Gaffes.

BTW, 87% of Obama voters said that Governor Sarah Palin boasted that she could see Russia from her house. She did not. That was funny gal Tina Fey pretending to be Palin.