In a news-roundup item BarbinMD of Daily Kos says

Republicans are “quietly asking” if John Ensign (R-NV) can serve effectively in the wake of his sex scandal. You’d think the “family values” crowd would be shouting it from the rooftops … which of course they would be if Ensign was a Democrat.

She said it here.

Remember it’s not so much that it’s ok if you are a Republican (IOKIYAR), it’s that it’s just not news when a Republican does it (IJNNWACDU.) Might as well write stories about dogs biting humans. Pretty much by definition nobody expects morality from conservatives so journalists mostly don’t bother making a big deal out of it when they do.