"I don't know why it is so hard to admit that for every Mark Sanford there is an Eliot Spitzer."

I have no trouble admitting that.  

My point is that Republicans/conservatives ran around during the 1990s and 2000s claiming to be the party of morals and family values, and passing judgment on those they felt fell short. Democrats, for all their faults (of which there are many), didn't make such claims in this department. Therefore, when a Republican screws up in this department, they're going to get hammered.....and they only have themselves to blame.

There was a state legislator in North Dakota that voted against some anti-LGBT discrimination legislation a couple of years ago. As it turned out, he had a profile on a gay dating website, which he finally admitted was his after several denials (he claimed someone else put it on the site). Of course he is going to get hammered for it.

In short, it's not that Republicans are worse....it's that they PRETEND that they're morally better.