As a general rule, the liberals get a pass on the most outrageous idiotic things that they say and do. Conservatives are held to very high standards, and then called out when found not to have met the standard.
Somebody could write a book about this.
One of my recent favorites was the MSM uproar about Sarah Palin writing notes on her hand, yet, the same MSM says nothing about Obama using a teleprompter everywhere he goes.
Saul Alinsky already did. The book is Rules For Radicals and people like Chris Matthews and Hillary Clinton are on record as being fans of the ideas espoused by Mr. Alinsky.