Much of the problem is bankrupt conservative values.
Talk about sexual issues comes up in regards to both the Trump and Clinton campaigns. People remember, Bill Clinton's affairs back in the 1990s. There's quite a few differences for sure. One big difference is that Hillary and Bill Clinton are still married. Their marriage has lasted through thick and thin. Isn't that an important value? Trump, on the other hand, has had many divorces, so I gather.
Also boasting about assault of women is pretty bad. Bad, even though today he is repenting about his previous comments (for mostly political reasons) I would guess.
There does seem to be a revolving door between conservatism and sexual promiscuity. One hears about Catholic priests with little boys and situations like politicians who oppose gay rights being outed, in some sort of sex sting operation. That revolving door might have to do with folks turning to strict religion to fight temptation?
Underneath the posturing, most people are sexual animals. In our country's culture wars, there are competing value systems. There are liberal and conservative value systems. Conservative values frown upon extra marital affairs, but if one goes to extreme liberal values, eroticism outside of the context of marriage isn't necessarily always bad. Bill Clinton's biggest indiscretion is more likely his original lies about the affair, rather than the affair itself, according to many liberals.
Myself being pretty far to the left in the culture wars, I am familiar with the concept of polyamory. That's the practice of not necessarily being totally monogamous to one mate. Polyamory is different from polygamy which has more to do with exploitation of a harem. On thinks of some obscure branches of Mormonism here. As for liberal values and going as far as polyamory, honesty and communication is considered important. In some cases, there might be eroticism outside of a primary relationship, but it makes a big difference if there's honesty, respect and communication among all the people involved.
In all this political talk about sexuality, I still have lots of respect for the Clinton's who's marriage has lasted. I doubt they would think of themselves as poly amorous; especially given the politically charged environment they live in. They are, after all, "mainstream" and (for the most part) establishment people. Still, I prefer their liberalism to the casino style showmanship of a Donald Trump pandering to sexual conservatism. The problem isn't just Trump. It seems like many TV evangelists and right wing politicians are that way.