NEW YORK—Democrats would love Donald Trump to talk about sex. And it looks like he will.As threats emanated from Trump Tower on Tuesday that the Republican nominee was preparing to name-check Bill Clinton’s mistresses – alleged or otherwise – Hillary Clinton’s aides and allies huddled hopefully in Brooklyn, eager for another opportunity to expose their opponent’s thin skin and rile up the female voters both campaigns need for the win.Democrats know any resurfacing of Bill Clinton’s affairs and other behavior can weigh their candidate down.