I vote for the Democratic Party candidates. Not being the "family values" party allows me to vote for the Clinton, Gingrich, Cain type of personalities without remorse. But it still gets considered.
Being a Washington politician means that these people spend a lot of time away from their families. Much like Tiger Woods, there are plenty of political groupies to choose from. It's not a regular American life by any means. I can understand that the weak succumb to the temptations.
Now, getting thrown out of your position by your party for monetary wrong-doings will cost you my vote. That, and being Republican.