Mark du U.P. wrote:
Examples:
"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 ..."
"57% of Obama voters were unable to correctly answer that Democrats
controlled both the House and the Senate."
http://www.zogby.com/news/ReadNews.cfm?ID=1642
The Democrats do not control the Senate. There are 49 Democratic senators.