Bill Clinton's exploits have nothing to do with how Hilary got into power, it's not a bad example at all.
Also, I kinda disagree that women have the 'default advantage' over men in a relationship. Sex is only one aspect of a relationship and, contrary to most stereotypes, it doesn't always dominate other aspects such as those involving money. Money and control over it is probably as big a determinate in the relationship power balance as any. Considering that men earn far more and are typically more economically active (either in work or seeking work), the men hold the advantage. This is becoming less so in some western cultures, but not in eastern ones.
In the UK, just under 80% of women from White British origin are economically active but only 19% of women of Bangladeshi origin are and 30% of women of Pakistani origin. I guess one issue here is treating 'women' as a homogeneous group.