Is this possibly right?: "White House 'Held Affair Over Petraeus's Head' For Favorable Testimony On Benghazi"

It is very hard to believe that even the Obama administration would do this.  It is also hard to believe that this claim could be proved since it is not in Petraeus' interest to acknowledge that he was blackmailed into providing false evidence to Congress.  However, if Krauthammer happens to be correct, it will indicate that the Obama administration thought that they were going to lose the election if they didn't hide the information on the Benghazi attack.