Yep, Obama was able to find enough invalid names on petitions in a 1996 election to eliminate 4 other Democratic Party candidates. Big deal - I expect that the other candidates would have eliminated him if any of his signatures were invalid. Why should someone other than a student of Chicago politics ever remember this - or care?   

Yep, Obama said in an interview with the San Francisco Chronicle that anyone who wanted to build a coal-fired plant would find themselves bankrupt under the new cap-and-trade rules, and somehow left out the part that was in his other statements about the basic intent of these rules was to encourage the use of new clean-coal technology. Why should somebody who didn't see that specific interview or who ever saw, heard or read anything else he said on coal associate that statement with him?

Yep, one of many people who hosted community "meet the candidate" forums was a person who, many years before, belonged to the Weather Underground. Guilt by association, with someone who he was never really associated with? Humbug.

It all sounds like sour grapes to me, and is Zogby implying that John Ziegler, a well known right-wing talk show host, didn't help them cherry-pick the questions, to select things that were very well known about (or implied about) the Republicans and very old news or very obscure about the Democrats. Also humbug.