Donald Trump's history of controversy with women

Tweet by tweet, Donald Trump could undermine the GOP's efforts to close the gender gap, a strategy that is critical to the party's hopes of retaking the White House in November.

Miffed that an anti-Trump super PAC targeted his wife by using a racy photo of her, Trump has gone after Ted Cruz's wife, upending the conventional rules of what's acceptable in presidential politics.

He posted on Twitter Tuesday that he would "spill the beans" on Heidi Cruz, a former Goldman Sachs executive.