Enough, already.

South Carolina Gov. Mark Sanford’s announcement today that he cheated on his wife brings down yet another high-profile Republican politician who once stood foursquare in favor of “family values.”

He joins Nevada Sen. John Ensign, who admitted to something similar just the other day. Then we have Louisiana Sen. David Vitter, who consorted with a hooker in Washington, D.C. Florida Rep. Mark Foley embarrassed his party when he sent lurid e-mail messages to young male pages in the U.S. Capitol.

I agree that Democrats are guilty as well of this foolishness. Former New York Gov. Eliot Spitzer took a tumble with a hooker; former North Carolina Sen. John Edwards admitted to cheating on his wife, Elizabeth, while she was battling breast cancer and then we have that former president who messed around with the intern while serving as Leader of the Free World.

But pardon me for sounding extra harsh on these latest announcements. Sanford and Ensign have held themselves up as paragons of virtue, only to be exposed as anything but. And that’s the problem with the party under which they serve.

Can we now call a halt to these lectures on morality?