Several Republican politicians have been embroiled in sex scandals recently. Some who don't like the current narrow-mindedness of the Republican party may wish that these hypocritical actions may bring the party down. After all, this is the party of family values.
Don't be too hasty in your wish. The jaundiced would say they all do it. The current Democrats who have strayed include John Edwards and Bill Clinton. And liberal Republicans took quite a blow over the years.
The first I remember is Sen. Edward Brooke, Massachussets, who ran into financial and ethical difficulties and lost re-election in 1978. See http://www.answers.com/topic/edward-brooke. Sen. David Durenberger, Minnesota, was accused of unethical conduct regarding outside income and misuse of public funds. He did not run for re-election in 1994. See http://www.answers.com/topic/david-durenberger. Sen Bob Packwood, Oregon, was accused of repeated sexual harassment of female staff and lobbyists. He resigned from the Senate in 1995. See http://www.answers.com/topic/Bob-Packwood.
If your feet are made of clay, don't put your head in the clouds.
See also "The Prurient Trap", Charles M. Blow, New York Times, 2009-06-26.