While immoral, his actions were not illegal. There is a reason why he is no longer a member of Congress and why he has no shot at ever holding a meaningful position in the Republican party again. He has been judged by his fellow conservatives and found wanting. The difference between the two parties is that when a Republican is caught engaging in immoral behavior he resigns his position. Gingrich quit, Livingston quit, Clinton, on the other hand, told the world that he would fight to the last second of the last minute of the last hour to keep his Presidency and had the full support of his party.
Mark Foley gets caught sending disgusting e-mails to a minor (no actual sex just the e-mails) and he loses his job. Dem Rep Gerry Studds get busted for having sex with a 17 year old male page and not only keeps his job but he receives a standing ovation from his fellow democrats after being censured and then appointed chair of the House Committee on Merchant Marine and Fisheries.
I'd say that the parties handle immoral behavior the same way. That why William Jefferson is still in Congress despite the fact that the FBI videotaped him taking a $100,000 bribe and later found $90,000 of the bribe money in his freezer. Not to mention the two people who have already plead guilty to bribing the congressman. Randy Cunningham on the other hand is spending the next 8 years of his life in prison. You're right, conservatives are such hypocrites.