I found this cartoon, and thought it was hilarious: http://images.ucomics.com/comics/nq/2003/nq031122.gif
It makes a point, similar to the one Al Franken makes in his book Lies and the Lying Liars who tell them. Back in the day, a technique in politics that was looked down upon was something called "mudslinging", or saying nasty and possibly untrue things about your opponent. Political discussion in this country these days is dominated by exactly that, except the people throwing mud around have lots more mud to throw than they used to, and are much more sophisticated about throwing it (and particularly, since conservatives are in power and are taking over the media (yes, I'm talking about YOU, Fox News, Limbaugh, Dr. Laura, Sean Hannity, Ann Coulter, et al.), the conservative side of the political spectrum). Loaded polls ("how would your opinion change if you found out candidate X had done Y?"), blatantly untrue books ("Treason!"), etc. etc. etc. make for some really slick mudthrowing that it can hardly be considered mudthrowing, because the term sounds so messy. If you're gonna throw mud, at least be funny about it (thank you, Al Franken).
But the cartoon really speaks to something we all must have noticed by now. Our conservative champions and voiceboxes keep turning out to have nasty little secrets. Limbaugh is/was addicted to drugs, the staunchest supporters of the sanctity of marriage have had who knows how many, even Jessie Jackson was unfaithful to his wife. It's just... depressing. But, when talking about the religious right, and how unexempt the (ultra?)-conservative and/or religious right leaders seem to be from the same thing makes for some pretty spiffy cognitive dissonance.
Ah, so I've gone and explained the comic's humor away... ah, well—it strikes a nerve for me.