It also rings true that we have lowered the bar of expectation with regard to decency and morality from our politicians.
That!
I've had a number of arguments against certain candidates because they quite obviously lied... and partisan apologists for that candidate would say "yeah, but all politicians lie!" This has happened, of course, for politicians from every party... but it shows that far too many of us not only accept it, but condone it. "It's OK because it's the one I support... but if your candidate lies I'll never stop mentioning it!"
I remember when Bill lied to a grand jury, and there were far too many people who said "yeah, but who wouldn't in that situation?" I wouldn't... I wouldn't have been in that situation, either. Which leads us to the fact that it's not just politicians, it's a large (and growing) segment of our society that believes that lying and deceitful behavior, immorality and selfishness are OK.
There is no sense or morality or common decency anymore. Sure, most kids lie about their bad behavior, but it used to be that parents would punish them even worse for lying about it. Nowadays so many people don't want to punish their kids - they want to be "friends," that kids get away with anything by lying about it... and those kids grow up, and breed more kids just the same; they grow up to be politicians, businessmen, police officers, and all manner of people that we are supposed to be able to trust. I even had an argument with someone boasting about screwing up someone else... their defense was "there's no law against it." I had to ask "since when to common decency and common sense need to be written into law?"