As someone who entered the workforce in a traditionally male field in 1972, I understand what sexism is. Of course you can find sexist coverage of any prominent woman you choose. But, you find mocking, negative coverage for nearly every male candidate as well. I do think there were sexist jokes and comments, but I also think there were times that even valid criticisms of Clinton were labeled sexism.
The coverage of Hillary Clinton in 2006 and 2007 was no more disrespectful than the coverage given to Howard Dean or John Kerry in 2004. Howard Dean was labeled "angry" and made to look impetuous, though nothing in his 12 years as governor of Vermont supported either of those negatives. John Kerry was a genuine war hero and had a reputation as a serious Senator, who took on some hard issues that no one else was willing too. Yet in addition to his well documented service record being questioned by people who supplied not a scintilla of corroboration, he was portrayed as having no real accomplishments in his career and his happy marriage was completely distorted by people suggesting he married his wife for her money. His and Teresa's personalities and accomplishments were distorted by the media. (Consider HRC was given more credit in 2008 than Kerry in 2004 for SCHIP, when significant parts of it were written for the Kerry/Kennedy, the precursor bill. HRC did deserve some of the credit she was given as she pushed Bill Clinton to fund it in the appropriations bill.)
I do not blame sexism for the fact that Teresa Heinz Kerry's very real achievements over more than a decade on green building were ignored, while in 2007, there were many articles on Bill Clinton's foundation taking green building on before he did anything.
Did anyone in 2004 cover the fact that Teresa was instrumental in reviving Pittsburgh?
http://www.google.com/hostednews/ap/article/ALeqM5hQgwN... Note that it was Teresa, who initiated the meeting of all the foundations that started these inititives. The reason there was not sexism. It had little to do with THK. It was the media not wanting John Kerry to be validated because she married him. (Remember how many people trusted Edwards, because of Elizabeth? Bill because of Hillary in 1992?)
These are just three examples of people I think the media treated worse than they treated Hillary Clinton. I think Clinton got a mix of overly negative AND overly positive coverage in 2006 - 2008. On balance, I don't think she was treated badly compared to most politicians. Her Senate career was completely hyped in many accounts. This does not mean there weren't things that never should have been said or written.
I also think there were times that Clinton herself used gender. In the NH debate, when there was a question on "change", her response was that just by being the first woman after 42 men, she would be change is an incredibly sexist comment - as it implies that women, just by being women, would lead in a different direction. In addition, after the Philly debate, rather than putting out a complex answer on the Spitzer question and moving past an embarrassing moment, she referred to the "guys" ganging up on the "girl", though in fact, what had happened was the NORMAL pile up on the frontrunner. (Remember this happened with Dean in late 2003.) She is the one who cast it through a sexist lens. The fact is, she had done well (other than the Spitzer question) and should have simply said that everyone always attacked the front runner - pointing out she was the front runner.
While I agree there is sexism, I think your comment on Palin actually takes it too far. The fact is that no male would have gotten away with the dumber than Dan Quayle answers. The chutzpah of saying early in the VP debate that she did not have to answer the questions, but could say anything she wanted was stunning. Did you ever see Bill Clinton or John Kerry or even John Edwards ever wink even once - much less often? Palin was flagrantly sexual, daring anyone to say so - and for the most part, serious people didn't.