I can't imagine the howl that would come from the Republicans if Obama had made a similar move.

Sure you can. Look at the Democrats who've dropped out of races or been forced out by their own party for indiscretions (that are frankly none of my business or yours, or anyone else's) just from the threat of it being used against them by the other side.

Now, think about how many Republicans have done this. Nope. In fact, their party puts them up on a pedestal and runs them anyway, then bitchslaps anyone who tries to point out their indiscretions. It amazes me how "Family Values" gets away with this.